Neutrino cross-sections are often extracted purely in terms of lepton kinematics. In recent years more detailed analyses have been developed that additionally make use of kinematics in the hadronic system, which has proven very successful. However, even with new detector technologies of unparalleled precision, pattern recognition and reconstruction algorithms still require particle energies...
The China Jinping Underground Laboratory (CJPL) is an excellent location for studying solar, geo- and supernova neutrinos. As an early stage of the Jinping Neutrino Experiment (JNE), we have been studying the performance of a 1-ton liquid prototype neutrino detector at CJPL-I. We aim to improve its electronics system and photomultiplier tubes (PMTs) to explore its potential capabilities...
The Taishan Antineutrino Observatory (TAO) aims to measure the fine structure in the reactor antineutrino spectrum with an unprecedented energy resolution of better than 2% at 1 MeV. Its primary goal is to provide a reference spectrum for JUNO, thereby enhancing its sensitivity for determining neutrino mass ordering. The precise spectrum also serves as a benchmark to verify the nuclear...
Hadron interaction model for light nucleus has an important roll in understanding neutrino reaction in a large neutrino detector. In Super-Kamiokande, neutral current quasi-elastic interaction (NCQE) induced by atmospheric neutrino gives 68-82% uncertainty on search for diffuse supernova neutrino background, which is caused by the uncertainty on interaction model between oxygen and high energy...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose
experiment designed to determine the neutrino mass ordering and precisely measure
neutrino oscillation parameters. JUNO is the world's largest liquid scintillator detector
instrumented with 17,612 20-inch photomultiplier tubes (PMTs). It is critical to develop
an accurate optical model for the PMTs within their...
In the field of neutrino physics, with its 20 000 ton of organic liquid scintillator, JUNO (Jiangmen Underground Neutrino Observatory) will be the largest detector built of its kind. The JUNO detection medium will be a mixture of linear alkyl benzene (LAB), 2.5 g/L of PPO and 3 mg/L of bis-MSB. The main goal of JUNO is to determine the neutrino mass ordering in six years of data taking at...
NOvA's near detector has recorded millions of neutrino interactions in the NuMI beam at Fermilab in both neutrino-enhanced and antineutrino-enhanced beam modes. Although the beam is composed primarily of muon (anti)neutrinos, there are inherent electron neutrinos and antineutrinos in both beam modes. I will present the current status of a measurement of the $\overline{\nu}_e$ charged-current...
KATRIN (KARlsruhe TRItium Neutrino experiment) plans to perform a high-precision differential measurement of the entire tritium β spectrum to search for keV-sterile neutrinos. To sustain the very high rate, KATRIN’s detector will be upgraded with a multi-pixel Silicon Drift Detector (SDD). The new detector response must be accurately tested in laboratory conditions, and therefore an ideal...
In the recent past, substantial effort has been devoted to exploring flavour symmetries to solve the flavour puzzle. However, traditional flavour symmetry models proved to be quite unsatisfactory. In 2017, a new 'bottom-up' approach based on modular invariance was suggested, wherein the Yukawa couplings of the Standard Model become modular forms. Within this framework, we addressed the...
Measurements of the $\beta^-$ spectrum of tritium give the most precise directly measured limits on neutrino mass. The Project 8 collaboration is using Cyclotron Radiation Emission Spectroscopy (CRES), a new experimental technique developed to surmount the systematic and statistical limitations of current-generation direct measurement methods to reach an electron-weighted antineutrino mass...
The lithium chloride aqueous solution has great potential to be the detection medium of a novel neutrino detector for multiple purposes. The nuclide $^7$Li provides a charged-current interaction channel with a high cross-section for the MeV-scale solar electron-neutrinos, enabling measurement of the solar neutrino spectrum. Its advantages in studying the upturn effect of solar neutrino...
Neutrino oscillation experiments using neutrino beams achieve high sensitivity to oscillation parameters by restricting the range of L/E values probed to be near a theoretical maximum disappearance probability. However, these experiments are insensitive to the oscillation phenomena predicted across a broad range of L/E values. Atmospheric neutrinos have energies spanning hundreds of MeV to...
The increasingly precise measurements needed to push the frontiers of neutrino physics require the construction of ever larger experiments, leading to ever more complex data to be interpreted. The JUNO next generation detector will reach a mass of 20 ktons and is expected to collect 2 PB/year of raw data to detect over 500.000 antineutrino events in 30 years of data.
The challenge is not...
Though liquid argon time projection chambers (LArTPCs) excel at reconstructing neutrino interactions at ~100s of MeV in energy, their physics reach can be enhanced by extending reconstruction to much lower energies. MicroBooNE has demonstrated reconstruction capabilities for energy depositions at the ~MeV and sub-MeV scale, which manifest as isolated "blips" spanning only a few readout...
The decay of radiogenic isotopes—such as uranium, thorium, and potassium—within the Earth generates radiogenic heat, driving Earth's dynamics. These isotopes also produce geo-neutrinos (anti-electron neutrinos), which serve as the only direct means of observing Earth's internal heat content. KamLAND experiment marked the world's first observation of geo-neutrinos in 2005. Since then, KamLAND...
Despite the incredible success and resilience of the Standard Model of particle physics, there are a few reasons to believe that it is not the final picture of all physical phenomena. Notable examples include the existence of neutrino mass and the collection of cosmological observations which comprise the case for a dark and widespread matter. While there are many experiments dedicated to...
Neutrinos are proven to have non-zero masses by the observation of neutrino oscillations, while the absolute neutrino mass scale is still unknown. Cosmological observations and neutrinoless double beta decay experiments put model-dependent upper limits of the neutrino mass at sub-eV level. With a precise spectroscopy of molecular tritium beta decay spectrum near the endpoint energy, the...
The Deep Underground Neutrino Experiment (DUNE) is a long baseline neutrino experiment for neutrino science and Beyond the Standard Model physics. The experiment will use in the first phase two far detector (FD) modules, 1300 km away from the beamline, installed 1.5 km deep underground. The FD modules will consist of Liquid Argon Time Projection Chambers (LArTPCs) with 17 kt of liquid argon...
In Super-Kamiokande, a 50-kton water Cherenkov detector, gadolinium (Gd) was loaded at concentrations of 0.01% in 2020 and of 0.03% in 2022, and a new observation phase called SK-Gd was started. The detection efficiency of neutrons is greatly improved to 50% with 0.01%Gd and to 65% with 0.03%Gd because gadolinium has a large cross section for neutron capture and produces high-energy gamma...
To achieve a sensitivity of 40 meV/c$^2$ in neutrino mass measurement, the Project 8 experiment relies on cyclotron radiation emission spectroscopy of beta decay electrons from an atomic tritium source. Due to the radioactive nature of tritium, initial R&D work for source and diagnostic tools development is carried out with a hydrogen beam. Presently, a thermally heated hydrogen atom source,...
The DUNE experiment will have a rich set of physics topics, including neutrino oscillation and Beyond Standard Model (BSM) physics. Of great importance to the latter of these goals in baryon number violation (BNV), especially including proton decay (PDK), neutron-antineutron transformations, and dinucleon decay. All suffer from atmospheric neutrino backgrounds, which at times mimic these rare...
We present three different projects on searches for searches of Heavy Neutral Leptons (also known in the literature as sterile neutrinos, right-handed neutrinos, or simply HNLs) in two different models.
The first project analyzes the sensitivity for parameters in the left-right symmetric model in the form of displaced HNLs in different proposals for lepton colliders: FCC-ee, CEPC, ILC,...
The Jiangmen Underground Neutrino Observatory (JUNO) will be a 20-kiloton liquid scintillator detector, currently under construction in southern China. Equipped with 17,612 20-inch photomultiplier tubes (PMTs) and 25,600 3-inch PMTs, JUNO aims to use its world-leading size, energy resolution and low background levels to achieve its primary physics goal of resolving the fine structure due to...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose
neutrino experiment currently under construction in Jiangmen, southwest China.
Its main detector consists of a acrylic sphere of 35.4m in diameter, filled with
20kt of liquid scintillator. JUNO features a broad physics program, with the
determination of the neutrino mass ordering as the primary goal. However,...
JUNO is an experiment located in southern China that aims to determine neutrino mass ordering and perform precise measurements of neutrino oscillation parameters using reactor neutrinos. The calibration of the JUNO detector is a key step towards achieving these physics goals. In this poster, the calibration system will be introduced, followed by the calibration strategy of JUNO, including the...
Coherent elastic neutrino nucleus scattering (CEvNS) occurs when a neutrino interacts with the nucleus as a whole resulting in a recoil of the nucleus. The interaction requires neutrino energies below 50 MeV as prevalent at the pulsed beam of the Spallation Neutron Source at Oak Ridge National Laboratory. The COHERENT experiment is located there, detecting CEvNS with a multitude of different...
In this study, we conducted a comprehensive characterization and optimization of a cryogenic pure CsI (pCsI) detector. Achieving a notable light yield of 35.2PE/keVee and a world-leading energy resolution of 6.9% at 60keV, we utilized a 2cm cubic crystal coupled with a HAMAMATSU R11065 photomultiplier tube (PMT). Additionally, we measured the scintillation decay time of pCsI, which proved to...
Recent results from neutrino experiments such as MINERvA, T2K, and NOvA have revealed notable disparities between simulated predictions and observed data in neutrino-matter interactions. These inconsistencies underscore the inadequacies of the leading theoretical models coded in the simulations, hence shadowing the full complexity of the interactions. A comprehensive understanding of the...
The RICOCHET experiment measures the spectrum of coherent elastic neutrino-nuclear scattering (CEνNS) of reactor neutrinos to search for physics beyond the Standard Model. In RICOCHET’s Q-Array detector, recoil energy deposited in an array of superconducting crystals is transferred to transition-edge sensors (TES) that convert temperature changes into current signals, which then get amplified...
The NuMI Off-Axis $\nu_e$ Appearance experiment (NOvA) is designed to study neutrinos and their interaction properties with matter. NOvA is a long-baseline neutrino oscillation experiment consisting of the Near Detector at Fermi National Accelerator and Far Detector in Ash River, Minnesota aiming to determine the neutrino mass hierarchy, and constrain the charge-parity violation phase. In...
Neutrino telescopes see events of various morphologies: these are the shapes of the aggregate photon hits recorded by the optical module array, including electron neutrino-induced cascades, muon neutrino-induced tracks, and many more. Among these event morphologies, the double cascade ("double-bang") is a class of particular interest because it might indicate the detection of a tau neutrino....
Separating Cherenkov from Scintillation light precisely and efficiently would allow a broad range of physics, especially in the neutrino field. The classification of Cherenkov and Scintillation photons in neutrino interactions is essential for better energy reconstruction, particle identification, and background separation. This classification can be carried out using traditional methods, and...
The CLOUD collaboration is pioneering the first fundamental research reactor antineutrino experiment using the novel LiquidO technology for event-wise antimatter tagging. CLOUD’s program is the byproduct of the AntiMatter-OTech EIC/UKRI-funded project focusing on industrial reactor innovation. The experimental setup consists of an up to 10 tonne detector, filled with an opaque scintillator and...
Borexino, located at the underground Laboratori Nazionali del Gran Sasso in Italy, was a large liquid scintillator detector designed for real-time detection of low-energy solar neutrinos. During more than ten years of data taking, it has measured all the neutrino fluxes produced in the proton-proton chain, the primary fusion process responsible for 99 % of solar energy, as well as from the...
Pre-supernova (preSN) neutrinos are emitted by massive stars in the hours leading up to their core collapse. The detection of preSN neutrinos may provide insight into the evolution of massive stars and the processes culminating in their core collapse, as well as address open questions about neutrinos such as the mass hierarchy. Additionally it may provide early warnings for nearby supernovae,...
Atmospheric neutrinos and cosmic-ray muons are generated from the showers of secondary particles via the interactions of primary cosmic-ray particles with air nuclei at the top of the atmosphere. The meson, such as pion and kaon, decays into atmospheric neutrino and cosmic-ray muon, reflecting the information of the hadronic interactions depending on their energy. Currently, atmospheric...
The Fluorescence Detector (FD) of the Pierre Auger Observatory has a large exposure for the detection of ultra-high-energy (UHE) upward-going showers (UGS) like the ones reported by ANITA.
Recently, strong limits on UGS were obtained using 14 years of FD data, which are in tension with the observations made by ANITA-I and III.
Furthermore, ANITA-IV has reported new UGS candidates.
Both of...
Identifying low energy activity in LArTPCs presents two main challenges: (1) the local topology is quite complex and highly variable, (2) interesting physics consists of several spatially separated blips which must be collected together. The first challenge makes separating different blip signatures which have similar underlying physics extremely difficult, since the distribution of their...
One of the primary goals of future galaxy and cosmic shear surveys such as the Euclid mission is to study dark energy and modified gravity models beyond LambdaCDM, shedding light on the nature of the late acceleration of the Universe. These observations will also be crucial to measure the absolute neutrino mass scale and constrain the effective number of neutrino species.
Cosmological...
For the operation of precision neutrino experiments, the understanding of neutrino interactions with matter are preconditioned requirements of all detections and measurements of neutrinos. The largest uncertainties in estimating neutrino-nucleus interaction cross sections arise in the incomplete understanding of nuclear effects. In the study of neutrino oscillations and nuclear scattering...
Cryo-PoF project is an R&D funded by the Italian Institute for Nuclear Research (INFN) in Milano-Bicocca (Italy) and it is based on Power Over Fiber (PoF) technology.
PoF technology delivers electrical power by sending laser light through an optical fiber to a photovoltaic power converter, in order to power sensors or electrical devices.
Cryo-PoF is inspired by the needs of the DUNE...
Evidence for the existence of dark matter strongly motivates the efforts to study its unknown properties. Additionally, the origin of high-energy astrophysical neutrinos detected by IceCube remains uncertain. Scotogenic models, in which neutrino mass generation occurs through interactions with the dark sector, are some of the leading theories that explain these two mysteries simultaneously. If...
The Coherent CAPTAIN-Mills (CCM) experiment is a 10 ton liquid argon scintillation and Cherenkov detector at the Los Alamos Neutron Science Center. The detector is located 23m downstream from the Lujan Facility's stopped pion source which will receive 2.25 10^22 POT in the ongoing 3 year run cycle. The short duration 290ns proton pulse and delayed arrival time of spallation neutrons allows CCM...
The Short Baseline Near Detector is a liquid argon time projection chamber (LArTPC) composed of a variety of subsystems which each help collect different data elements. The TPC itself uses a wire-based readout to collect drifted ionization electrons. In conjunction with this charge readout system, there is also a photon detection system (PDS) composed of two methods of scintillation light...
We explore the de-excitation of highly excited $^{11}$B$^*$ by use of the TALYS and GEMINI++ codes, which can deal with the decay of a compound nucleus by a series of sequential binary decays. For a liquid scintillator detector, the residual nucleus $^{11}$B$^*$ can be produced by neutrino interactions with $^{12}$C or proton decays in $^{12}$C. We use both the TALYS and GEMINI++ codes to...
Building upon the LiquidO detection paradigm, the CLOUD detector represents a significant evolution in neutrino detection, offering rich capabilities in capturing both spatial and temporal information of low-energy particle interactions. With a 5-10 ton opaque scintillator inner detector volume, CLOUD is the byproduct of the EIC/UKRI funded AntiMatter-OTech project, whose main objective is to...
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a neutrino detector at the Booster Neutrino Beam (BNB) at Fermilab. It is a gadolinium-doped water Cherenkov detector designed for measuring the neutron multiplicity in neutrino-nucleus interactions, as well as measuring the charged-current cross section of muon neutrinos. In addition, ANNIE has a strong focus on testing new...
The Ka rlsruhe Tr itium N eutrino (KATRIN) experiment aims to determine the mass of the electron antineutrino by precise measurement of the energy spectrum of $\beta$-electrons from tritium decay using a MAC-E-Filter setup. After a total measurement time of 1000 days in 2025, a final sensitivity better than $0.3\,\mathrm{eV/c^2}$ (90 % C.L.) is...
ATLAS, a collider detector, can measure the flux of high-energy supernova neutrinos, which originate in the circumstellar medium from days to months after the explosion. Simulating predicted fluxes, we find at most around 0.1–1 starting events and around 10–100 throughgoing events from a supernova 10 kpc away. Possible Galactic supernovae from Betelgeuse and Eta Carinae are considered as...
The Quantum Technologies for Neutrino Mass (QTNM) is a UK-based neutrino mass measurement experiment which aims to leverage advances in quantum technology to develop a new experimental apparatus to determine the absolute neutrino mass.
Sensitivity to neutrino masses in the 10meV/c^2 regime is well motivated by neutrino oscillation measurements, but is out of reach of the current...
Photomultiplier tube (PMT) arrays are widely used for neutrino and dark matter detectors, such as liquid xenon (LXe) time projection chambers. We proposed using a new 2” four-anode PMT R12699-406-M4 from Hamamatsu for the future LXe detectors. The effective 1” active area is about an order of magnitude finer than the previously widely used 3” PMTs and offers better position reconstruction,...
The Pacific Ocean Neutrino Experiment (P-ONE) is a cubic-kilometre scale neutrino telescope to be deployed deep in the northern Pacific Ocean off the coast of British Columbia, Canada. P-ONE aims to observe high-energy neutrinos to identify and gain insights into the physical mechanisms behind their sources across the universe. The detector will be composed of an array of kilometre tall...
It is particularly challenging to discern between these two effects since the Hamiltonian of neutrino oscillation is modified in a similar manner by both Lorentz invariance violation (LIV) and non-standard interaction (NSI) in neutrino propagation. Their sole distinction is that the earth matter effect does not impact LIV, while NSI depends on matter density. Therefore, the theories defining...
The spatial width of neutrino wave packets produced by radioactive sources is a debated topic. It has been shown that a sufficiently small neutrino width would have detectable effects for Standard Model neutrinos in JUNO and improve eV-scale sterile neutrino model fits to current data. Predictions for the neutrino width from radioactive sources vary by several orders of magnitude, depending...
Knowing the evolution of our Galaxy is a difficult task. The finiteness of the speed of light can help us on cosmological scales, but it is not helpful if we want to investigate shorter distances. Some information can be extrapolated by analyzing concentrations of radionuclides in layers of material inside the Crust, but this could give us hints just on the evolution of the Solar System and...
The Jiangmen Underground Neutrino Observatory (JUNO) is a large-scale liquid scintillator detector under construction for neutrino detection. The detector will be situated in a laboratory ~700 meters underground. As its primary physics goals, neutrino mass ordering and precision oscillation parameter measurements require stringent systematic control of its measured reactor neutrino energy...
DUNE (Deep Underground Neutrino Experiment) is a long-baseline neutrino experiment that will precisely measure neutrino oscillation parameters, observe astrophysical neutrinos, and search for processes beyond the standard model (such as nucleon decays, heavy neutral leptons, and accelerator-produced dark matter). DUNE will build four Liquid Argon Time Projection Chamber detectors (LAr-TPC)...
In the pursuit of precise neutrino event simulation, the ICARUS experiment within the Short-Baseline Neutrino (SBN) program at Fermilab uses an overlay technique to closely align simulations with experimental data. This technique consists of taking signals from data from each of the each of the three subsystems (TPC, PMT, CRT) and overlaying a simulated neutrino interaction onto the event. The...
TAMBO is a next-generation neutrino observatory to be deployed in the Colca Valley in the Peruvian Andes. The TAMBO detector array will be composed of small detectors deployed over several square kilometers on the slopes of the canyon. This area has significant touristic, agricultural, and cultural value for the local population. While these facilities promise both educational and economic...
The CUPID experiment has embarked on a groundbreaking journey in the search for neutrinoless double beta decay (0$\nu\beta\beta$), leveraging innovative detector technologies to push the boundaries of sensitivity.
Preliminary measurements were conducted using the CUPID BDPT (CUPID
Bolometric Detector Prototype Tower), the inaugural prototype tower designed to evaluate the novel detector...
Since the beginning of data taking, the Super-Kamiokande (SK) experiment has been conducting ground-breaking studies of solar neutrinos. All measurements to date, including those from SNO and KamLAND, are consistent with solar neutrino flavor change due to matter enhanced neutrino oscillations. But we are not yet done with solar neutrinos! Two key phenomena are yet to be observed with high...
In the study of reactor and geo antineutrinos, tagging of the inverse beta decay (IBD) positron-neutron coincidence signature allows for the elimination of most backgrounds. In many detectors, the primary remaining background is caused by $\alpha$ captures on 13C — so called ($\alpha$, n) events — which release a neutron and closely mimic the IBD's signature. The most common ($\alpha$, n)...
We explore how neutrino quantum decoherence could affect the accuracy of standard neutrino oscillation parameter measurements in the DUNE and T2HK experiments. Our analysis reveals that the measurements of $\delta_\text{CP}$, $\sin^2\theta_{13}$, and $\sin^2\theta_{23}$ are more significantly impacted in DUNE compared to T2HK. Conversely, DUNE exhibits greater sensitivity to detecting...
The Jiangmen Underground Neutrino observatory (JUNO) will be a versatile 20 kton liquid scintillator detector with a large spectrum of physics objectives. It is currently under construction in China, with its filling set to start in 2024. The primary goal of JUNO is to determine the neutrino mass ordering by detecting the vacuum oscillation pattern of reactor antineutrinos over a baseline of...
Studying the conservation/violation of CP symmetry in the leptonic sector is very essential in understanding the evolution of the universe. Lorentz and CPT invariance are fundamental symmetries of nature. Breaching of Lorentz invariance can also lead to CPT violations. We can examine the signature of Lorentz invariance and CP violations within the standard three-flavor neutrino oscillation...
The NuWro Monte Carlo generator has been improved by taking into account the results of theoretical calculations for MEC from the work of J.E. Sobczyk, J. Nieves, F. Sanchez [Phys.Rev.C 102 (2020) 024601]. MEC events lead to the ejection of two or three correlated nucleons. These correlations are simulated using latent parameters. Predictions after the FSI from NuWro are compared to...
The PandaX-4T experiment operates a dual-phase liquid xenon time projection chamber that is located in China Jinping Underground Laboratory. Searches for novel electronic recoil signals (NERS) in such type of detector due to solar axions, axion-like particles, dark photons, and neutrinos with an enhanced magnetic moment have attracted increasing attention as they could provide evidence for...
In the realm of physics beyond the Standard Model, Non-Standard Interactions (NSI) in neutrinos have emerged as a significant area of interest. While NSIs of neutrinos are mediated by a vector field ($Z^\prime$), recent research has delved into a novel form of neutrino interaction with matter mediated by light scalar particles, known as Scalar NSI (SNSI). SNSI appears as a Yukawa coupling...
Inorganic crystal scintillators, especially doped alkali-halide scintillators such as NaI[Tl], CsI[Tl] and CsI[Na], play an important role in neutrino experiments. The pioneering achievement of the COHERENT experiment, utilizing CsI[Na] for the initial detection of Coherent Elastic Neutrino-Nucleus Scattering (CEvNS), demonstrated a nuclear recoil detection threshold of approximately 8...
Experimental discoveries in recent decades have provided valuable information on the nature of neutrino masses and mixings and present the first evidence for physics beyond the standard model. Moreover, massive neutrinos are now serving as an ideal tool to help unlock the mysteries of the matter abundance in the Universe.
At the same time the questions related to nature of neutrino masses,...
In this poster we describe in detail the feasibility of detecting $^{8}$B solar neutrino at JUNO with three reaction channels (neutrino-electron elastic scattering, neutrino-13C charged current, and neutral current interactions). A reduced 2 MeV threshold on the recoil electron energy is achievable with optimized background reduction strategies. The advantage of JUNO for charge and neutral...
JUNO (Jiangmen Underground Neutrino Observatory) is a multipurpose neutrino physics experiment currently under construction in China. Its central detector consists of an acrylic sphere, filled with 20 kton of organic liquid scintillator, and a stainless steel structure, built to sustain 43212 photomultiplier tubes (PMTs) around the sphere. Thanks to its unique features, such as its huge active...
The PROSPECT experiment, known as the Precision Reactor Oscillation and SPECTrum, aims to examine the spectrum of antineutrinos emitted by the High Flux Isotope Reactor (HFIR) and investigate potential oscillations over short distances. The most recent publication by PROSPECT showcases an improved analysis, enhancing previous findings by incorporating a method called Single Ended Event...
With the CONUS reactor antineutrino experiment, the coherent elastic neutrino nucleus scattering (CEνNS) on germanium nuclei was studied at the nuclear power plant in Brokdorf, Germany. Very low energy thresholds of about 210 eV were achieved in four 1 kg point contact germanium detectors operated inside an optimized shield structure. The most recent results obtained during the final phase of...
Massive and deep underground detectors such as the future Deep Underground Neutrino Experiment (DUNE) will offer a great opportunity to search for rare, beyond-the-Standard-Model (BSM) physics signals including baryon number violating (BNV) processes. One such BNV process is nucleus-bound neutron-antineutron transition, followed by antineutron annihilation on a nearby neutron/proton that...
The T2K experiment was commissioned with the primary task of measuring neutrino oscillation parameters. The near detector site has the purpose of measuring the neutrino beam composition close to the source, as well as constraining the main sources of systematic uncertainty on the oscillation fits such as the interaction cross section. The near detectors are capable of measuring...
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a 26-ton water Cherenkov detector that operates in the path of the Booster Neutrino Beam at Fermilab. ANNIE’s studies of neutrino-nucleus interactions in water-based targets have the potential to reduce systematic uncertainties in future long-baseline neutrino oscillation experiments. At the same time, ANNIE serves as an...
The Ricochet experiment aims at measuring the coherent elastic neutrino-nucleus scattering (CEνNS) of reactor antineutrinos at the Institut Laue-Langevin, ILL (Grenoble, France). Ricochet employs two detector technologies to measure the CEνNS: (1) germanium cryogenic calorimeters with neutron-transmutation-doped thermistors (called Cryocube); (2) cryogenic calorimeters with a superconducting...
Neutrino telescopes present a novel opportunity to search for a coupling between Heavy Neutral Leptons (HNLs) and tau neutrinos via mass mixing. These searches can leverage the tau neutrino flux from the oscillations of atmospheric muon neutrinos as they traverse the Earth. This work presents the first search for HNLs using ten years of data from IceCube’s DeepCore sub-array. These results...
The Taishan Antineutrino Observatory (TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO) to precisely measure the reactor neutrino spectrum with sub-percent energy resolution at 1 MeV. The TAO detector is a 2.8-ton Gd-doped liquid scintillator (LS) detector and the LS is contained in a spherical acrylic vessel and viewed by $\sim 10\ \rm m^2$ inward-facing...
Uncertainties in neutrino-nucleus cross-section measurements are usually evaluated by considering the spread of a measurement over an ensemble of variations of systematic parameters under the assumption they are distributed as a multivariate gaussian.
However, this cannot always be expected to be a safe assumption, in particular as we enter an era of systematic-limited measurements.
We...
The Jiangmen Underground Neutrino Observatory (JUNO), under construction in southern China, will determine the neutrino mass hierarchy (MH) by observing neutrinos from nuclear reactors at a distance of 53 km. To reach the desired sensitivity (> 3σ) for MH, the radiopurity of the detector materials and especially the liquid scintillator (LS) plays a crucial role. To ensure the purity of the 20...
Super-Kamiokande (SK) has the powerful capability of independently determining the supernova (SN) pointing direction from the burst neutrinos. These produce a 3-d distribution of outgoing charged leptons around the neutrino flux direction in the water volume. A new, novel SN direction reconstruction method developed for SK uses HEALPix as a data structure for analyzing the reconstructed burst...
The ENUBET project recently concluded the R&D for a site independent design of a monitored neutrino beam for high precision cross section measurements, in which the neutrino flux is inferred from the measurement of charged leptons in an instrumented decay tunnel. In this phase three fundamental results were obtained and will be discussed in this talk: 1) a beamline not requiring a horn and...
The Short-Baseline Near Detector (SBND) at Fermilab is a Liquid Argon Time Projection Chamber (LArTPC) experiment designed to capture neutrinos from the Booster Neutrino Beam (BNB). Its proximity to the beam target (110 m) and large size (112 tons) enable the recording of millions of neutrino interactions annually. SBND provides the highest statistics worldwide for neutrino-argon cross-section...
We present an implementation of the npnh model of Martini et al in the GENIE neutrino nucleus interaction event generator along side subsequent comparisons of the model predictions to neutrino cross-section measurements. The Martini model includes a particularly comprehensive description of npnh interactions, considering MEC, SRC and interference contributions in addition to a contribution...
Making high-precision measurements of neutrino oscillation parameters requires an unprecedented understanding of neutrino-nucleus scattering. To help fulfill this need, MicroBooNE has produced an extensive set of multi-differential charged-current muon neutrino cross-section measurements which probe the leptonic and hadronic systems. This poster presents the first energy dependent...
Since their first detection, neutrinos have offered several experimental anomalies, each leading to significant discoveries and broadening our understanding of fundamental interactions. Several such anomalies, however, remain unresolved. Those include the LSND, MiniBooNE, and Gallium anomalies, each of which can independently be interpreted as neutrino oscillations involving the addition of...
Weakly Interacting Massive Particles (WIMPs) are the most suitable particle dark matter candidates. These can be gravitationally captured into massive celestial objects, such as the Sun, where they can accumulate and then self-annihilate into Standard Model particles, also yielding neutrinos. Neutrino telescopes, large arrays of photo-sensors, can search for this indirect signal of the...
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a 26-ton gadolinium-doped water Cherenkov detector situated 100 meters downstream in Fermilab's Booster Neutrino Beam. ANNIE’s main physics goal is to measure the final state neutron multiplicity of neutrino-nucleus interactions. This measurement will improve our understanding of these complex interactions and help reduce the...
Although the standard neutrino oscillation process induced by neutrino mass is well-established, there may be second-order contributions to this phenomenon from physical mechanisms beyond non-zero neutrino masses that could modify the standard framework. In this study, we systematically evaluate DUNE's capabilities to observe such beyond-standard oscillation (BSO) effects, assessing its...
The Standard Model’s (SM) limitation in explaining neutrino masses and flavor mixing leads to an exploration of frameworks beyond the standard model (BSM). The study of neutrino properties, including oscillations and interactions, can provide clues for improving our overall understanding of nature. Neutrino oscillations, the transition between different neutrino flavors during long-distance...
Neutrino oscillation provides a unique window in exploring physics beyond the standard model (BSM). One such scenario is quantum decoherence in neutrino oscillation which tends to destroy the interference pattern of neutrinos reaching the far detector from the source. In this poster, I will present the study of the decoherence in neutrino oscillation in the context of the ESSnuSB experiment....
It is well known that the presence of Earth matter affects the neutrino oscillations through the charged and neutral current (NC) interactions, facilitated by W and Z bosons, respectively. In order to explore beyond Standard Model NC interactions, an additional $Z^\prime$ gauge boson can serve as a mediator for the interactions between matter and neutrinos. In our work, we examine light...
Micro-structured units have been utilised in the KATRIN experiment to study the main spectrometer background, reflecting the significance of background mitigation possibilities in an experiment focused on measuring the absolute mass scale of neutrinos with exceptional sensitivity.
The prevalent background model is characterised by the ionisation of highly excited states originating from...
The Short-Baseline Neutrino program in Fermilab aims to resolve the nature of the low-energy excess events observed in LSND and MiniBooNE, and analyze with unprecedented precision neutrino interactions with argon. These studies require reliable estimate of neutrino cross sections, in particular for charged current quasielastic scattering (CCQE). In arxiv:2312.13369 (to be published in Phys....
The PROSPECT, STEREO, and Daya Bay experiments have provided world-leading results regarding the detection of reactor-produced antineutrinos. PROSPECT and STEREO have made short-baseline (~10m) measurements of antineutrinos from highly enriched uranium (HEU) research reactors where over 99% of the antineutrino flux comes from $^{235}$U. The Daya Bay experiment has studied antineutrino emission...
Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment located in southern China. The primary goal of JUNO is to determine the neutrino mass ordering and measure several neutrino oscillation parameters to sub-percent precision by measuring the oscillated reactor antineutrino spectrum at $\sim52.5$ km from eight nuclear reactors. Selection of the reactor IBD...
The Jiangmen Underground Neutrino Observatory (JUNO), currently under construction in China, will be a multi-kton liquid scintillator detector with a unique potential to perform a real-time measurement of solar neutrinos well below the few MeV threshold typical of Water Cherenkov detectors. JUNO’s large target mass and excellent energy resolution are prerequisites for reaching unprecedented...
JUNO’s Sensitivity to Geoneutrinos
Cristobal Morales Reveco$^{1,2,3}$ on behalf of JUNO collaboration
1. GSI Helmholtzzentrum für Schwerionenforschung GmbH, Germany
2. RWTH Aachen University, Germany
3. Forschungszentrum Jülich GmbH, Germany
The Jiangmen Underground Neutrino Observatory (JUNO) is an experiment being built in China, which consists of a 20 kton liquid scintillator...
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid scintillator detector that will be located 650 m underground in the south of China. One of the main goals of the experiment is to determine the neutrino mass ordering. With energy resolution of 3% at 1 MeV, an optimized baseline of 52.5 km, and using electron antineutrino data from eight nuclear reactors, JUNO can...
The KATRIN experiment aims to measure the neutrino mass by precision spectroscopy of tritium β-decay. Recently, KATRIN has improved the upper bound on the effective electron-neutrino mass to 0.8 eV/c² at 90% confidence level [1] and is continuing to take data for a target sensitivity of better than 0.3 eV/c².
In addition to a non-zero neutrino mass, there are other tensions in the neutrino...
The Karlsruhe Tritium Neutrino (KATRIN) experiment probes the effective electron anti-neutrino mass by a precision measurement of the tritium beta-decay spectrum near the endpoint.
A world-leading upper limit of $0.8 \,$eV$\,$c$^{-2}$ (90$\,$% CL) has been set with the first two measurement campaigns.
New operational conditions for an improved signal-to-background ratio, the steady reduction...
Light sterile neutrinos with a mass at the eV-scale could explain several anomalies observed in short-baseline neutrino oscillation experiments. The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to determine the effective electron anti-neutrino mass via the kinematics of tritium beta-decay. The precisely measured beta-spectrum can also be used to search for the signature of light...
The IceCube Neutrino Observatory is located at the geographic South Pole instrumenting a cubic kilometer of deep glacial ice with 5,160 digital optical modules on the main array to detect Cherenkov light. The DeepCore sub-detector is a denser in-fill array that gives a lower energy threshold where we can study neutrino oscillations using atmospheric neutrinos with energies of 5-100 GeV....
Super-Kamiokande (SK), a 50 kton water Cherenkov detector in Japan, is observing neutrinos from various natural sources. SK studies the effects of both the solar and terrestrial matter density on neutrino oscillations: a distortion of the solar neutrino energy spectrum would be caused by the edge of the Mikheyev-Smirnov-Wolfenstein resonance in the solar core, and terrestrial matter effects...
The Japanese Spallation Neutron Source (JSNS) at J-PARC can provide an intense source of light new particles. We study the sensitivity of existing neutrino detectors to the decay in flight of light scalars, axion-like-particles, and heavy neutral leptons produced in pion and kaon decay at JSNS. We consider the near detector of the T2K experiment, ND280, where the fast, magnetized, gaseous...
Jiangmen Underground Neutrino Observatory (JUNO), located in the southern part of China, will be the world’s largest liquid scintillator (LS) detector upon completion. Equipped with 20 kton LS, 17612 20-inch PMTs and 25600 3-inch PMTs in the central detector (CD), the primary goal of JUNO is to determine the neutrino mass ordering, by precisely measuring the oscillation energy spectrum of...
The Jiangmen Underground Neutrino Observation (JUNO), located at Southern China, is a multi-purpose neutrino experiment that consist of a 20 kton liquid scintillator detector. The primary goal of the experiment is to measure the neutrino mass ordering (NMO) and measure the relevant oscillation parameters to a high precision. Atmospheric neutrinos are sensitive to NMO via matter effects and can...
Super-Kamiokande has observed $^8$B solar neutrino elastic scattering on electrons with recoil electrons at kinetic energies as low as 3.49 MeV to study neutrino flavor conversion within the sun. At SK-observable energies, these conversions are dominated by the Mikheyev–Smirnov–Wolfenstein effect. An upturn in the electron survival probability in which vacuum neutrino oscillations become...
China JinPing Underground Laboratory (CJPL) is an underground laboratory with 2800 meters rock overburden and is ideal to carry out experiment for rare-event searches. Cosmic muons and muon-induced neutrons present an irreducible background to both solar neutrino and neutrinoless double beta decay experiment at CJPL. A precise measurement of the cosmic-ray background of CJPL would play an...
Kaon production cross sections provide an important constraint on $K^+$ production by atmospheric neutrinos in current and future proton decay searches. Modern neutrino-nucleus event generators largely depend on theoretical models for the descriptions of backgrounds due to kaons and need to be verified by measurements.
We search for $K^+$ production in charged-current neutrino...
The KM3NeT/ORCA detector (Oscillation Research with Cosmics in the Abyss), currently under construction, is deployed at 2450m depth in the Mediterranean Sea, near Toulon, France. Its primary scientific goal is to determine the Neutrino Mass Ordering. ORCA is an array of Digital Optical Modules, spheres that host 31 photomultiplier tubes, tied together in vertical structures (the Detection...
Electron-neutrino charged-current interactions on iodine have been proposed for solar and supernova neutrino detection, owing to the large predicted cross section. Using a 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on ${}^{127}$I with pion decay-at-rest neutrinos produced by the Spallation Neutron Source at Oak Ridge National...
ProtoDUNE Single-Phase was a 770 ton liquid argon time projection chamber detector. It was DUNE's first full-scale engineering prototype and operated from 2018-2020. It took test beam data of charged hadrons at momenta of 0.3-7 GeV/c in 2018, including data of positively charged kaons at high GeV-scale momenta. A total inelastic cross section was measured using these test beam kaons with the...
Measurements of electron neutrino charged-current interactions on Argon from 10-50 MeV are few but are important for future experiments and theoretical modeling of nuclei. Knowledge of the cross section at these energies will be critical in the event that the upcoming Deep Underground Neutrino Experiment (DUNE) observes neutrinos from a galactic supernova. Uncertainties on the cross sections...
Neutrino-Induced Neutrinos (NINs) are neutrons produced as a result of the interaction between neutrinos and nuclei. NINs are central to supernova early warning systems such as the Helium and Lead Observatory (HALO) and also appear as background in accelerator-based neutrino experiments. The occurrence of NINs affects the measurement of neutrino interaction rate (cross-section). In $2015$, the...
The SNO+ experiment is a large multi-purpose neutrino detector, currently filled with liquid scintillator. For the first time in a single experiment, SNO+ is able to measure the neutrino oscillation parameters θ₁₂ and Δm²₂₁ simultaneously through both reactor anti-neutrinos and Boron-8 solar neutrinos. This poster demonstrates the latter approach, with an analysis of scintillator phase data. A...
Current and future accelerator neutrino oscillation experiments need neutrino interaction models with smaller systematic uncertainties to resolve much of delta CP phase space. Final state interactions (FSI) and scattering off of correlated nuclei (2p2h) are poorly understood processes that currently contribute large uncertainties to leading models. These processes have proven difficult to...
The most powerful technique for directly studying the absolute neutrino mass is spectroscopy of beta-decay electrons at the endpoint of the spectrum. Project 8 has pioneered a new frequency-based method, cyclotron radiation emission spectroscopy (CRES), and intends to reach a sensitivity of 40 meV/c$^2$.
Replacing the traditional molecular T$_2$ with atomic T is key to this sensitivity;...
Producing 20,000 tons of ultra-pure liquid scintillator poses one of the most challenges for the Jiangmen Underground Neutrino Observatory (JUNO). The three components of the liquid scintillator—linear alkylbenzene (LAB), 2,5-diphenyloxazole (PPO), and 1,4-bis(2-methylstyryl) benzene (bis-MSB)—do not meet the strict radioactive content standards upon purchase from suppliers, necessitating the...
With its unprecedented sensitivity to MeV-scale neutrinos, the Jiangmen Underground Neutrino Observatory (JUNO) will play an essential role in the emerging field of multi-messenger astronomy, especially in capturing next galactic core-collapse supernova (CCSN). Two real-time monitoring systems have been designed to detect the forecasted burst of neutrinos from a CCSN in JUNO. Here we present a...
Low-temperature calorimeters have demonstrated significant efficacy in probing rare phenomena such as neutrinoless double beta decay and dark matter. Despite the impressive energy resolution these massive calorimeters achieve, the physics sensitivity reach is constrained by background radioactivity in these experiments. One approach to address this limitation involves implementing...
NOvA is a long-baseline accelerator-based internationally collaborated neutrino experiment based in the USA. NOvA uses an intense neutrino beam produced at Fermilab’s accelerator complex to make physics measurements of neutrino oscillations, neutrino cross sections, and other high quality neutrino analyses. For its physics goals, NOvA uses two functionally-identical detectors. The Near...
The ICARUS T600 LArTPC detector successfully ran for three years at the underground LNGS laboratories, providing a first sensitive search for LSND-like anomalous electron neutrino appearance in the CNGS beam. After a significant overhauling at CERN, the T600 detector has been placed in its experimental hall at Fermilab, fully commissioned, and the first events observed with full detector...
The DARWIN project aims to build and operate a next-generation observatory for dark matter and neutrino physics. The detector will feature a dual-phase time projection chamber with an active target of 40$\,$tonnes of liquid xenon (LXe), built underground with carefully selected materials. Its low-energy threshold and ultra-low background will enable the search for a wide range of neutrino...
Systematic studies of core-collapse supernovae (CCSNe) have been conducted based on hundreds of one-dimensional artificial models (O'Connor & Ott 2011,2013; Ugliano et al. 2013, Ertl et al. 2015) and two-dimensional self-consistent simulations (Nakamura et al. 2015;2019, Burrows & Vartanyan 2020). We have performed three-dimensional magnetohydrodynamic simulations for the core-collapse of 16...
The decay-at-rest of charged kaons produces monoenergetic muon neutrinos with an energy of 236 MeV. The study of these neutrinos at short baselines allows us to constrain neutrino interactions. In this work, we study kaon decay-at-rest neutrinos at the MiniBooNE and JSNS2 experiments. We use data from these experiments to probe standard neutrino interaction cross-sections as well as...
Much has been learned about the deep Earth based on seismic measurements, combined with geophysical constraints and theories of Earth formation. However, such methods alone cannot directly resolve the full structure of the inner Earth, e.g. in terms of matter density, composition and temperature distributions. One open question in this realm concerns the nature and composition of two...
The Jiangmen Underground Neutrino Observatory (JUNO) will be a 20-kiloton liquid scintillator detector, currently under construction in southern China. JUNO will be equipped with 17,612 20-inch photomultiplier tubes (PMTs) and 25,600 3-inch PMTs and aims to determine the neutrino mass ordering as the primary physics target by precisely measuring the energy spectrum of the reactor electron...
Detecting neutrons from the interactions of MeV to GeV neutrinos promises to uncover previously hidden details of what is happening at the heart of the interaction and help to reconstruct precise (anti)neutrino kinematics. The newly upgraded near detector, close to the muon (anti)neutrino beam for the T2K experiment, includes a novel super fine-grained detector (Super-FGD), a 3D tracker...
The goal of CONNIE (COherent Neutrino-Nucleus Interaction Experiment) is to detect reactor antineutrinos via the CE$\nu$NS (Coherent Elastic Neutrino Nucleus Scattering) channel using fully depleted high-resistivity CCDs (charge coupled devices) installed at about 30 meters from the core of the 3.8 GW Angra-2 nuclear reactor in Rio de Janeiro, Brazil. In 2021, The detector was upgraded with...
New results from the DANSS experiment on the searches for sterile neutrinos are presented. They are based on 8.5 million inverse beta decay events collected at 10.9, 11.9, and 12.9 meters from the 3.1 GW reactor core of the Kalinin Nuclear Power Plant in Russia. Additional 0.8 million of antineutrino events collected in 2023 further improves the sensitivity for the sterile neutrino mixing...
In the ECHo experiment large arrays of low temperature metallic magnetic calorimeters (MMCs) enclosing Ho-163 are used for the high resolution measurement of the electron capture spectrum. The goal of the experiment is to achieve the sensitivity to detect an extremely small spectral shape distortion in the end point region due to a finite neutrino mass.
Thanks to the modular construction of...
The recent detection of the coherent elastic neutrino-nucleus scattering (CEνNS) opens the possibility to detect neutrinos with small-size detectors and with different techniques, opening a new window to explore possible BSM physics.
The CEνNS process generates signals at the few-keV level, requiring sensitive detection technologies for its observation. The European Spallation Source (ESS)...
The ICARUS T600 Liquid Argon Time Projection Chamber (LArTPC) detector is the far detector of the Short Baseline Neutrino (SBN) Program located at Fermilab National Laboratory (FNAL). The data collection for ICARUS began in May 2021, utilizing neutrinos from the Booster Neutrino Beam (BNB) and the Neutrinos at the Main Injector off-axis beam (NuMI). The SBN Program has been designed to...
Xenon-based detectors are powerful tools in the search for low energy signatures of new physics. Here we report experimental results that open up a new channel for rare event searches in these detectors: MeV-scale charged-current interactions on 136Xe nuclei. These interactions will populate low-lying 1+ excited states in 136Cs, which then relax to the ground state through the emission of...
No method for efficient detection of electron neutrino in MeV energy region has been established so far although there are interesting physics channels in the low energy such as measurement of supernova $\nu_e$, $\nu_e$ oscillation and $\nu_e$-nucleus interactions. Lead (Pb) has a novel potential as $\nu_e$ target. $\nu_e$ is expected to interact with Pb nucleus and produce an electron and...
The Taishan Antineutrino Observatory (TAO, also known as JUNO-TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO). The experiment consists of a ton-level liquid scintillator detector placed at 44 m from a 4.6 GWth reactor core of the Taishan Nuclear Power Plant. The main goal is to measure the reactor antineutrino spectrum with sub-percent energy resolution,...
The Diffuse Supernova Neutrino Background (DSNB) is the integrated flux of neutrinos and antineutrinos emitted by all past supernovae in the observable Universe. It is yet to be observed.
In this regard, the Super-Kamiokande (SK) experiment has entered its gadolinium (Gd) era in 2020: the Gd-loading of the water tank enhances the capability to tag the inverse beta-decay neutron stemming from...
The Deep Underground Neutrino Experiment (DUNE) is a cutting-edge international neutrino experiment under construction now in US, which uses Liquid Argon Time Projection Chambers (LArTPCs) as its main detector technology for particle identification on the far site in the SURF facility in South Dakota. The far detector (FD) modules will be able to detect longbeam neutrinos (generated by a...
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kilo-tons liquid scintillator detector currently under construction in southern China. The primary goal of the experiment is to determine the mass hierarchy of the neutrino by analysing the energy spectrum shape of reactor antineutrino. That is why, the detector’s energy response is of paramount importance. In the JUNO detector, the...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long baseline neutrino experiment that will take place in the US. This experiment will feature in its first phase two Liquid Argon Time Projection Chambers (LArTPCs) with a volume of 17kt each. In addition to the accelerator neutrino program, the DUNE far detector will provide a unique opportunity to study atmospheric...
DUNE is a long-baseline neutrino experiment that will use the new LBNF (Long-Baseline Neutrino Facility) neutrino beam sampled at the Near Detector complex (DUNE ND), 574 m downstream of the production target, and at the Far Detector complex, 1300 km away at the SURF laboratory at a depth of about 1.5 km. To assess the future performance of the DUNE Far Detector, full-scale prototypes of the...
The NOvA (NuMI Off-Axis electron neutrino Appearance) experiment is a long-baseline neutrino oscillation experiment composed of two functionally identical detectors, a 300 ton Near Detector, and a 14 kton Far Detector separated by 809 km and placed 14 mrad off the axis of the NuMI neutrino beam created at Fermilab. This configuration enables NOvA's rich neutrino physics program, which includes...
Spurred by a variety of neutrino oscillation anomalies, a strong interest has arisen in recent years in non-standard neutrino interactions (both active and sterile). The effects of such interactions have been also investigated within extensions of the standard cosmological model.
The work focuses on the possibility to characterize and constrain the parameter space of the so-called Majoron...
The Project 8 experiment aims to probe the absolute neutrino mass through direct kinematic measurements of the tritium beta decay spectrum using cyclotron radiation emission spectroscopy (CRES). Non-uniformity of the magnetic field in the physics volume is expected to dominate the achievable energy resolution, and thus sensitivity.
CRES requires precise knowledge of the field through which...
The Deep Underground Neutrino Experiment (DUNE) international project, currently under construction, will enable an exciting program for precision neutrino physics and beyond. Two multidetector facilities will be exposed to the world's most intense neutrino beam: the Near Detector complex will measure the beam flux and composition 575 m downstream of the production target, at Fermilab; and the...
The IceCube Neutrino Observatory consists of one cubic kilometer of Antarctic ice at the South Pole, which is instrumented with optical modules to detect Cherenkov light produced during neutrino interactions. The central lower region of the detector, known as DeepCore, has closely spaced optical modules that allow it to detect neutrinos with energies as low as a few GeV. We use the GeV-energy...
The XENON collaboration, has used a series of xenon dual-phase time projection chambers (TPCs), to search for the first direct evidence of Dark Matter (DM) in the Universe. The latest generation experiment, XENONnT, operates in the LNGS underground facility in Italy, utilizing 5.9 tonnes of liquid xenon. With an unprecedented reduction in background level, XENONnT opens new avenues for...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment currently being constructed in China. JUNO uses a 20-kiloton liquid scintillator detector equipped with 17612 20-inch PMTs and 25600 3-inch PMTs. Its main physics goal is to determine the neutrino mass ordering and achieve precision measurements of oscillation parameters. Besides that, JUNO is capable...
The ability of future accelerator-based neutrino experiments to set unprecedented constraints on all oscillation parameters, requires a solid understanding of neutrino cross sections. This is true especially for the most often selected signal of final state lepton and a single proton, and its background which could consist of processes with more than one final state proton. However, neutrinos...
Interaction generators for neutrinos are essential tools to predict the final states of neutrino interactions from atmospheric and accelerator sources. Those final states would be important input to quantify the relation between the visible energy in our detector and the neutrino energy, whose distribution is affected by oscillation. This understanding is crucial for experiments such as JUNO,...
SoLAr is a future MeV-scale neutrino experiment planning for a near-term future detector at Boulby Underground Laboratory in the United Kingdom. It uses a shared anode plane with combined pixelated charge and light readout planned to enable tracking and calorimetric reconstruction using combined light and charge data, providing greater sensitivities to solar neutrinos and other MeV-scale...
The Jiangmen Underground Neutrino Observatory (JUNO) has been primarily designed to determine the neutrino mass ordering by measuring the energy spectrum of neutrinos from two nuclear power plants, utilizing its exceptional energy resolution. JUNO employs a 20 kton liquid scintillator as the target substance in the central detector, with tens of thousands of 20-inch PMTs applied to achieve...
The unknown absolute scale of the neutrino mass remains an outstanding problem in astro and particle physics. Project 8 experiment seeks to measure the effective $anti-$neutrino mass $m_{\beta}$ with a sensitivity of $40~\text{meV}/c^2$ with the tritium endpoint method. To achieve this goal, Project 8 has pioneered the Cyclotron Radiation Emission Spectroscopy (CRES) technique. Adopting a...
The Precision Reactor Oscillation and SPECTrum (PROSPECT) experiment is a short-baseline reactor experiment with the goal of measuring the antineutrino spectrum from the High Flux Isotope Reactor (HFIR). It searches for potential short-baseline oscillations and the existence of sterile neutrinos. PROSPECT has already set new limits on the existence of eV-scale sterile neutrinos while achieving...
The Jiangmen Underground Neutrino Observatory (JUNO) is located 650 meters underground in southern China. The central detector of JUNO, featuring 20 kton of liquid scintillator and 78% photo-sensitive coverage, is designed to achieve an energy resolution better than 3% at 1 MeV. The physics goals of JUNO include determining the neutrino mass ordering and precisely measuring the neutrino...
JUNO (Jiangmen Underground Neutrino Observatory) is a 20.000-ton multipurpose underground liquid scintillator detector, which is designed to study the fundamental neutrino parameters. The central detector of JUNO will be filled with a liquid scintillator (LS) mixture, composed of LAB as solvent, 2.5 g/l PPO as fluor and 3 mg/l bis-MSB as wavelength shifter. Given the huge mass, the high...
We derive quantum kinetic equations for mixing neutrinos including consistent forward scattering terms and collision integrals for coherent neutrino states. Our derivation is valid for arbitrary neutrino masses and kinematics, it includes the local coherence effects, and a comprehensive set of generalized Feynman rules for computing the coherent collision integrals. We discuss the importance...
The neutrino mass is one of the still-to-be-solved puzzles of particle physics. Measuring the neutrino mass is possible by performing precision spectroscopy of the tritium beta-decay spectrum at its endpoint. Until now, experiments following this approach use molecular tritium and are therefore limited by the broadening of the molecular final state distribution.
For future experiments...
MicroBooNE is a Liquid Argon Time Projection Chamber, able to image neutrino interactions with excellent spatial and timing resolution, enabling the identification of complex final states resulting from neutrino-nucleus interactions. This poster will provide an overview of measurements for rare final states, such as $\Lambda$ and η production. These processes both provide unique sensitivities...
SNO+ is a neutrino detector located 2 km underground in SNOLAB, Canada,
whose main goal is to search for neutrinoless double-beta decay. In
addition, being about 240 to 350 km away from three large nuclear power
plants, it is well situated to measure neutrino oscillation parameter
Δm_21^2. Analyses of antineutrino signals, including the observation of
geoneutrinos in SNO+ (first...
Neutrino experiments require high-speed data processing to extract valuable insights from large data sets. This poster presents an advanced real-time charge reconstruction algorithm for neutrino physics applications at the Jiangmen Underground Neutrino Observatory (JUNO), implemented on a field-programmable gate array (FPGA) platform.
The algorithm is designed to exploit the processing...
In neutrino oscillation experiments, uncertainty in the reaction model between neutrinos and atomic nuclei in the low energy region of Sub-Multi GeV is one of the causes of systematic errors. The NINJA experiment aims to precisely measure the reaction between neutrinos and atomic nuclei in this low energy region.
The NINJA experiment measures neutrino reactions using a nuclear emulsion plate...
The Short Baseline Near Detector (SBND), a 112-ton liquid argon time projection chamber (LArTPC), is the near detector of the Short Baseline Neutrino Program at Fermilab. Due to its large mass and proximity to the Booster Neutrino Beam target, SBND will see a record-breaking number of neutrino interactions on liquid argon enabling a rich program of neutrino cross-section measurements. Of...
The Cosmic Neutrino Background (CNB) encodes a wealth of information, but has not yet been observed directly. To determine the prospects of detection and to study its information content, we reconstruct the phase-space distribution of local relic neutrinos from the three-dimensional distribution of matter within 200 Mpc/h of the Milky Way. Our analysis relies on constrained realization...
The Deep Underground Neutrino Experiment (DUNE) is the next generation neutrino experiment currently under construction. It consists of a broadband neutrino beam at Fermilab, a high precision near detector, and the largest liquid argon time projection chamber far detector ever designed at the Sanford Underground Research Facility (SURF).
The Region of Interest (ROI) filter is designed for...
The control of nuclear effects is crucial to guarantee the success of future neutrino oscillation experiments (HyperK
and DUNE) in the search of CP violation in the leptonic sector. In particular, recently published semi-inclusive measurements are very sensitive to the details of nuclear modeling.
Among the various processes contributing to the cross section, two-particle--two-hole...
Neutrino-neutrino dispersion models have gained popularity as potential solutions for reconciling the discrepancy between local measurements of the Hubble constant ($H_0$) and the model-dependent measurements derived from the cosmic microwave background radiation and other early Universe probes. This work addresses the current state of neutrino self-interactions, with a specific focus on the...
Recent advances in the development of cryogenic particle detectors, such as the magnetic microcalorimeter (MMC), allow the fabrication of sensor arrays with an increasing number of pixels, enabling measurements with unprecedented energy resolution. Since these detectors must be operated at the lowest temperatures, the readout of large detector arrays is still quite challenging due to strict...
In the standard interaction framework, directly measuring absolute neutrino masses through neutrino oscillations isn't feasible since oscillations rely solely on mass-squared differences. However, the introduction of scalar non-standard interactions can incorporate additional terms in the oscillation Hamiltonian, directly impacting the neutrino mass matrix. This characteristic renders scalar...
While primarily searching for neutrinoless double-beta decay in $^{130}$Te, CUORE demonstrates that bolometric detectors have reached sufficient size and scale to track through-going particles. Novel track-reconstruction tools and analysis techniques have been developed to study track-like events in the detector, including exotic signatures such as those induced by hypothetical...
The ICARUS detector in the Short-Baseline Neutrino program at Fermilab is sensitive to “long-lived” new physics particles that would be produced in the Neutrinos at the Main Injector (NuMI) beam and decay inside the ICARUS liquid argon time projection chamber (LArTPC). We show results from a new analysis in ICARUS which searched for di-muon decays from a long-lived particle produced in kaon...
Lorentz invariance (LI) is a fundamental symmetry in physics that ensures that the same equations can be used to describe experiments in any inertial laboratory. Many proposed quantum gravity theories predict a violation of this symmetry, which is referred to as Lorentz invariance violation (LIV). The "Standard-Model extension" parametrizes physically valid ways of including LIV into the...
Super-Kamiokande (SK) is known as the most sensitive detector to the supernova neutrinos originating in our galaxy.
SK also has a sensitivity to neutrinos from the extra-galactic supernova within 10 Mpc from Earth, called a “mini-burst”, which is expected to occur once every few years. Recently, SN2023ixf, one of the mini-bursts, is famous as the closest supernova in the last few years....
Grand Unified Theories explain the unification of the electromagnetic, weak, and strong forces and most of them predict protons to decay into lighter particles. The latest result of the proton decay search for $p\rightarrow e^+/\mu^+ +\eta$ channels in Super-Kamiokande will be discussed in this presentation. The cross sections of $\eta$ nuclear effect are improved compared to previous work,...
The XENONnT experiment has been built at the Laboratori Nazionali del Gran Sasso (LNGS) in order to continue the search for dark matter in the form of weakly interactive massive particles (WIMPs). Thanks to its low energy threshold and unprecedentedly low background level, the physics reach of XENONnT has expanded from the direct detection of WIMPs to a variety of rare event searches such as...
Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) is an interaction well predicted by the Standard Model. Its large cross-section allows to study neutrinos with relatively small detectors. Precision measurement of the CEvNS cross-section is a way to study neutrino properties and search for new physics beyond the Standard Model. The NUCLEUS experiment aims to detect and characterize CEvNS...
Secondary mesons are produced in the stratosphere when primary cosmic rays collide with atmospheric molecules. Muons from secondary meson (mainly pions and kaons) decays can be detected in underground laboratories. As the temperature increases, the atmospheric density decreases, resulting in a reduced probability of meson interaction with atmosphere molecules and an increased probability of...
The most successful method of probing neutrino mass directly is beta decay spectroscopy. The Project 8 experiment is pursuing a next-generation direct neutrino mass measurement with a target sensitivity of $40\rm{meV/c^2}$. To this end, the collaboration has developed the technique of Cyclotron Radiation Emission Spectroscopy (CRES), a frequency-based approach for measuring differential beta...
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton multipurpose underground liquid scintillator (LS) detector currently under construction in southern China. One of the capabilities of JUNO detector is to search for the baryon number violation processes, which would be a crucial step towards testing the Grand Unified Theories and explaining the matter-antimatter asymmetry of the...
LiquidO is an innovative particle detection paradigm using opaque liquid
scintillators. The emitted light is confined near its creation point and captured by an array of wavelength-shifting fibers. This enables high-resolution imaging for particle identification down to the MeV scale, giving LiquidO the potential for various practical applications in particle physics.
After the successful...
The Jiangmen Underground Neutrino Observatory (JUNO) experiment aims to precisely measure reactor anti-neutrinos via the Inverse Beta Decay (IBD): $\bar{\nu}_{e} + p \rightarrow e^{+} + n$. With a baseline of about 53 km from the closest nuclear power plants in southern China, the experiment is optimised to determine the neutrino mass ordering. The IBD occurs inside the 20 kton Liquid...
Modeling of rare neutrino processes often relies on either simple approximations or expensive detector simulations. The former is often not sufficient for interactions with complex morphologies, while the latter is too time-intensive for phenomenological studies. We present SIREN (Sampling and Injection for Rare EveNts), a new tool for neutrino phenomenology and experimental searches alike...
The PandaX-4T experiment, employing a two-phase xenon time projection chamber, aims at exploring various physics phenomena, including detecting astrophysical neutrinos and searching for dark matter. It has set a significant constraint on solar B-8 neutrino flux using commissioning data, with an effective exposure of 0.48 tonne-year through neutrino-nucleus coherent scattering. Additionally, it...
Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) poses an irreducible background for direct dark matter search experiments. In this work we discuss the scenario of low-threshold, high-exposure cryogenic solid state experiments optimized for the search of low-mass dark matter. We show that experiments with energy thresholds of $\mathcal{O}$(eV) and exposures of...
We determine the solar neutrino fluxes from the global analysis of the most
up-to-date terrestrial and solar neutrino data including the final results of the three phases
of Borexino. The analysis are performed in the framework of three-neutrino mixing with
and without accounting for the solar luminosity constraint. We discuss the independence
of the results on the input from the Gallium...
The ICARUS experiment, utilizing Liquid Argon Time Projection Chamber (LAr TPC) technology, has been installed at Fermilab in Chicago, Illinois, following its initial operation in Italy and subsequent refurbishment at CERN. ICARUS completed commissioning in June 2022. Currently, the experiment is in the phase of analyzing data from its two runs of physics data acquisition and gearing up for...
The Neutrino Elastic Scattering Observation with NaI(Tl) (NEON) experiment aims to observe coherent elastic neutrino-nucleus scattering (CEvNS) using reactor electron antineutrinos with a 16.5 kg NaI(Tl) detectors. A novel crystal encapsulation technique has enhanced light collection efficiency, resulting in a yield of 22 to 25 photoelectrons per keV of light. The detection facility of the...
The COHERENT collaboration made the first measurement of coherent elastic neutrino-nucleus scattering (CEvNS) and did so by employing neutrinos produced by the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The uncertainty of the neutrino flux generated from the SNS is on the order of 10% making it one of COHERENT's most dominant systematic uncertainties. To address...
NOvA is a long-baseline accelerator neutrino experiment at Fermilab whose physics goals include precision neutrino oscillation as well as cross-section measurements. We present the status of the measurement of a muon neutrino charged-current cross section with zero mesons in the final state at the NOvA near detector. This measurement is being made with respect to the kinematics of the final...
The Short Baseline Near Detector (SBND), a 112 ton liquid argon time projection chamber (LArTPC), is the near detector of the Short Baseline Neutrino Program at Fermilab. Neutrino events in SBND will produce both ionization electrons and scintillation light, which will be detected at the Anode Wire Planes Plane Assemblies (APAs) and the Photon Detection System (PDS), respectively. Wire-Cell is...
The Jiangmen Underground Neutrino Observatory (JUNO) is a critically important neutrino experiments aimed at determining the mass hierarchy (MH) of neutrinos. It is currently under construction and will be filled with 20k tons of liquid scintillator (LS) to mainly observe the reactor anti-neutrinos from two sets of nuclear reactors located 53 km away. In order to reach the goal of 3$\sigma$...
DUNE will exploit a wide-band neutrino beam and the energy spectrum information at the level of both the 1st and 2nd oscillations maxima in order to achieve its sensitivity to CP violation. This sensitivity is obtained by comparing the energy spectra of oscillated events with neutrinos and antineutrinos.
This work is investigating the neutrino energy reconstruction in DUNE starting from...
Since SN1987A, we know that supernovae (SNs) produce burst of
neutrinos which can be detected several minutes to hours before the
electromagnetic burst. Detecting this neutrino burst would provide
valuable information on the supernova explosion mechanism and allow
to give an early warning of the imminent eletromagnetic burst arrival
to the astronomer community. The Super-Kamiokande...
COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches) is an underground cryogenic sodium iodide (NaI) experiment for the direction detection of dark matter. The experimental facility consists of a water Cherenkov muon veto surrounding the dilution refrigerator that holds NaI detector modules. Both the veto and the modules are sensitive to neutrinos given a...
There have been considerable efforts to measure the parameters of the neutrino mixing matrix PMNS (Pontecorvo-Maki-Nakagawa-Sakata). The least known of these parameters is the complex CP-violating phase, $\delta_{\text{CP}}$. Accelerator experiments are the leading candidates to measure it with high significance. Supernova neutrinos, on the other hand, have never been considered to this date,...
Theia is a proposed large-scale neutrino detector that would use both scintillation and Cherenkov light to achieve the lower-energy threshold and finer energy resolution of scintillator detectors, coupled with the direction resolution and particle identification capabilities of water Cherenkov detectors. Such a “hybrid” detector could achieve an extremely broad physics program, including...
Theia is a proposed large-scale neutrino detector designed to discriminate between Cherenkov and scintillation signals in order to enable a rich program of fundamental physics. The baseline design consists of a tank filled with a novel scintillator, such as water-based liquid scintillator (WbLS), along with fast, spectrally-sensitive photon detection, in order to leverage both the direction...
Coherent elastic neutrino nucleus scattering (CEvNS) was proposed 50 years ago within the standard model. The cross section of this process depends quadratically on the number of neutrons in nuclei and prevails over all other cross sections of known neutrino interactions in the allowed energy region, below approximately 50 MeV for heavy nuclei. At the same time, the recoil energy for this...
The CONUS+ experiment is a new project which aims to detect coherent elastic neutrino-nucleus scattering (CEνNS) of reactor antineutrinos on germanium nuclei in the fully coherent regime, continuing in this way the CONUS physics program. The CEνNS signature will possibly be measured with the four 1 kg point-contact high-purity germanium (HPGe) detectors of the former experiment, which have...
The ENUBET (Enhanced NeUtrino BEams from kaon Tagging) project is aimed at designing and experimentally demonstrating the concept of monitored neutrino beams. These novel beams are enhanced by an instrumented decay tunnel, whose detectors reconstruct large-angle charged leptons produced in the tunnel and give a direct estimate of the neutrino flux at the source. The detector technology for the...
Photomultiplier tubes (PMT) are widely deployed at neutrino experiments for photon counting. When multiple photons hit a PMT consecutively, their photo-electron (PE) pulses pile up to hinder the precise measurements of the count and timings. We introduce Fast Stochastic Matching Pursuit (FSMP) to analyze the PMT signal waveforms into individual PEs with the strategy of reversible-jump...
Measuring the absolute mass of neutrinos remains a significant challenge in particle physics and astrophysics. The only theory-unrelated method to assess its value is through direct measurements, which involve a kinematic analysis of electrons emitted in beta decays. The experiments aiming to perform such a measurement fall into two categories: spectrometers and calorimeters. Spectrometers...
Over 50 years ago, it was predicted that it is possible to split an atom with a neutrino interaction, but there has never been a concerted experimental effort to confirm this phenomenon. The existence of this process would inform nuclear astrophysics, nuclear reactor monitoring and give a vantage into a process that bridges both the weak and strong fundamental interactions. This would add the...
The Mobile Antineutrino Demonstrator project aims to construct a realistically deployable antineutrino detection system that can operate at essentially any reactor facility with no infrastructure support beyond electrical power. Through engagement with potential end-users and host facilities, this effort will advance the technical readiness of neutrino-based reactor monitoring concepts by...
Coherent elastic neutrino nucleus scattering (CEvNS) off atomic nuclei was predicted in 1974, but only in 2017 it was experimentally observed by the COHERENT collaboration. RED-100 is a two-phase detector designed and built to study CEvNS of reactor antineutrinos. In 2022, the detector completed exposure at Kalinin Nuclear Power Plant with xenon as target material. Data collection included...
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a gadolinium-doped water Cherenkov neutrino detector located along the Booster Neutrino Beam (BNB) at the Fermi National Accelerator Laboratory (FNAL). Its primary physics goals are the measurement of the neutrino-nucleus interaction cross section in water, and the measurement of final-state neutron multiplicity from these...
The LiquidO technology proposes a new paradigm of detection that uses an
opaque medium to confine light and wavelength-shifting fibers to collect it near
its point of emission. After a summary of the demonstration of light confinement
using a 10-liter prototype, we will explore a future project that will exploit this
technology.
The SuperChooz project is a neutrino oscillation experiment...
A core-collapse Supernova in our own galaxy would be close enough to be seen with neutrinos in many of the world's neutrino and dark matter detectors. Those neutrinos exit the star promptly, while the electromagnetic fireworks appear ~hours later after the explosion's shock reaches the star's surface. An automated alert network allows a coincidence between detectors to be issued...
While the unitarity of the neutrino mixing matrix is postulated in the standard three-flavour paradigm, it can be verified experimentally through neutrino oscillation measurements. In this study, we combine recent public data from the atmospheric and reactor neutrino experiments — including IceCube-DeepCore, Daya Bay, and KamLAND — and place model-independent constraints on the individual...
The Jiangmen Underground Neutrino Observatory (JUNO) is a large-scale liquid scintillator detector constructed for neutrino detection. The detector will be situated in a laboratory ~700 meters underground to reduce the impact of cosmic muon-induced background. The central detector consists of a 20 kton liquid scintillator target enclosed within an acrylic sphere, surrounded by 17,612 20-inch...
SNO+ is a multi-purpose neutrino detector located 2 km underground at SNOLAB, Canada. The experiment is in operation with 780 tonnes of liquid scintillator as its target mass. The high light yield, low background levels, and planned long-term operation make SNO+ suitable for precision measurements of high energy solar neutrinos (E > 5 MeV) and provide the opportunity to detect low energy solar...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multipurpose observatory currently under construction in China. JUNO's physics reach will span many areas, amongst which precision neutrino oscillation measurements using reactor neutrinos, solar, atmospheric and geoneutrino related measurements.
In order to reduce the backgrounds from the atmospheric neutrino flux, the JUNO detector...
The extremely weak interaction of neutrinos makes them both challenging to study and excellent cosmological messengers as they can escape the most dense astrophysical objects. As a result, neutrinos can play a crucial role in answering some of the most important questions at both the smallest and largest scales of the universe. The next generation of accelerator-produced high-energy neutrino...
The detection of neutrinos from the next galactic Core Collapse Supernova (CCSN) is a unique opportunity to study its explosion mechanism with profound implications in astrophysics, nuclear physics, and particle physics. The Jiangmen Underground Neutrino Observatory (JUNO), currently under construction in Southern China, is a 20-kiloton liquid scintillator detector equipped with two...
Thanks to their excellent energy resolution, cryogenic microcalorimeters are a particularly suitable detector choice for calorimetric neutrino mass experiments, where the ability of precisely resolving decay spectra is essential. Transition Edge Sensors (TESs) and Magnetic Microcalorimeters (MMCs) are employed in the HOLMES and ECHo experiments, respectively. In order to increase the...
The Karlsruhe Tritium Neutrino (KATRIN) experiment aims to probe the effective electron anti-neutrino mass by measuring the beta-decay spectrum of molecular tritium close to the endpoint region. By the end of 2025, a final sensitivity better than $0.3\,\mathrm{eV}/c^2$ ($90\,\%$ CL) will be anticipated with a total of 1000 days of measurement. For going beyond, i.e. to set up a next-generation...
The upgrade of the T2K magnetised near detector (ND280) is near completion in J-PARC. After detecting the first neutrinos in Fall 2023, ND280 is collecting new data in 2024 with a beam intensity above 700 kW. The new active target, the Super Fine-Grained Detector (SFGD) is made up of about 2 million 1 $\textrm{cm}^3$ scintillation cubes, thereby offering excellent timing resolution and...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment currently under construction in southern China.
The detector consists of a 35.4 m diameter acrylic sphere filled with 20 000 t of ultra-pure liquid scintillator and makes JUNO the largest liquid scintillator-based, underground neutrino observatory. The primary goal of JUNO is to determine the neutrino...
The choice of unfolding method for a cross-section measurement is tightly coupled to the model dependence of the efficiency correction and the overall impact of cross-section modeling uncertainties in the analysis. A key issue is the dimensionality used, as the kinematics of all outgoing particles in an event typically affects the reconstruction performance in a neutrino detector. OmniFold is...
The Karlsruhe Tritium Neutrino (KATRIN) Experiment directly measures the neutrino mass-scale with a target sensitivity of 0.3 eV/c^2 by determining the shape change in the beta spectrum near the endpoint. The Rear Wall is used to maintain a homogenous starting potential distribution over the full magnetic flux tube volume in the gaseous tritium source. During operation, tritium is circulated...
The neutrino has a lifetime that is significantly longer than the Age of the Universe, as it can only decay radiatively via loops involving gauge bosons. However, the presence of physics Beyond the Standard Model could induce 'visible' neutrino decay between neutrino mass eigenstates. This decay process could be identified in laboratory experiments as well as from astrophysical or cosmological...
The Large Volume Detector (LVD) at the INFN Gran Sasso National Laboratory, Italy, whose main goal is the detection of neutrino bursts from core-collapse supernovae in the Galaxy, has been taking data since 1992. The updated search for neutrino bursts, including the most recent data up to 2024, is presented. The analysis yielded no evidence of neutrino bursts, imposing a new upper limit to the...
SNO+ is a large liquid scintillator-based experiment located 2km underground at SNOLAB, Sudbury, Canada. It reuses the Sudbury Neutrino Observatory detector, consisting of a 12 m diameter acrylic vessel filled with about 780 tonnes of ultra-pure liquid scintillator. The high overburden and cleanliness procedures give low background rates. Combined with the kiloton scale experiment, it is...
KM3NeT/ORCA is a 7 Mton water-Cherenkov neutrino detector being built by the KM3NeT Collaboration at the bottom of the Mediterranean Sea at a depth of 2450 meters off the coast of Toulon, France.
The main goal of this experiment is to determine the neutrino mass ordering as well as measuring oscillation parameters for the atmospheric neutrino sector.
The ORCA detector has been growing in...
In recent years, neutron multiplicity associated with neutrino-nucleus interactions has become important observable in large neutrino detectors such as Super-Kamiokande, KamLAND, and JUNO. The neutron multiplicity can be measured by detecting gamma rays emitted by neutron capture by taking delayed coincidence. It is expected to improve the results of various physics analyses by using the...
Hot white dwarfs lose energy mainly in the form of neutrinos through plasmon decay from the inner part of the star. BSM physics can have visible contributions to the cooling of these compact objects. The aim of this study is to show how hot white dwarf cooling could be altered by a dark photon from the L_mu - L_tau model and explore these effects from ultra-light to heavy intermediators. This...
The method of indirect detection of dark matter (DM) particles in neutrino telescopes involves the observation of Cherenkov signals left by their annihilation or decay products. An excess of neutrinos produced by these processes is searched in nearby astrophysical targets such as the Galactic Centre or the Sun, where large amounts of DM are believed to accumulate. The KM3NeT infrastructure,...
The SBND (Short Baseline Near Detector) is the near detector of the short baseline neutrino program (SBN) at Fermilab. SBND, is located at 110 m from the neutrino beam and will collect an impressive statistic of neutrino-argon interactions. SBND will also serve as a test bed for new technologies for LAr-TPCs. In particular SBND implements different and complementary solutions for the detection...
