Description
Parallel sessions on Neutrino physics
A detailed understanding of neutrino(ν)-nucleus interactions is essential for the precise measurement of neutrino oscillations at long baseline experiments, such as T2K. The T2K near detector complex, designed to constrain the T2K flux and cross section models, also provides a complementary program of neutrino interaction cross-section measurements. Through the use of multiple target materials...
The experimental observation of the coherent elastic neutrino-nucleus scattering (CE$\nu$NS) opened up a new window to explore different sectors from nuclear to neutrino physics, passing through electroweak parameters determination. Indeed, from the analysis of the data provided by COHERENT experiment, we determined for the first time the average neutron rms radius of $^{133}\text{Cs}$ and...
The DUNE experiment directs a neutrino beam from Fermilab towards a 40 kiloton
liquid argon time-projection chamber (TPC) 1300 km away in the Sanford Underground
Research Facility in South Dakota. By measuring electron neutrino and anti-neutrino
appearance from the predominantly muon neutrino and anti-neutrino beams, DUNE
will determine the neutrino mass ordering and explore leptonic CP...
The knowledge of initial flux, energy and flavor of current neutrino beams is currently the main limitation for a precise measurement of neutrino cross sections. The ENUBET ERC project (2016-2021) is studying a facility based on a narrow band neutrino beam capable of constraining the neutrino fluxes normalization through the monitoring of the associated charged leptons in an instrumented decay...
T2K is a long baseline neutrino experiment producing a beam of muon neutrinos at the Japan Particle Accelerator Research Centre on the East coast of Japan and measuring their oscillated state 295 km away at the Super Kamiokande detector. Since 2016 T2K has doubled its data in both neutrino and antineutrino beam modes. Coupled with improvements in analysis techniques this has enabled the...
The NOvA experiment is a long-baseline neutrino oscillation experiment
that uses the upgraded NuMI beam from Fermilab to detect both electron
appearance and muon disappearance. NOvA employs two functionally identical
detectors: a Near Detector, located at Fermilab, and a Far Detector,
located at Ash River, Minnesota over an 810 km baseline. NOvA's primary
physics goals include precision...
The Deep Underground Neutrino Experiment (DUNE) has a broad physics program, which includes measuring the CP violating phase, determining the neutrino mass hierarchy and performing precision tests of the three-flavor paradigm in long-baseline neutrino oscillations by means of making measurements of neutrino oscillation parameters. Other science goals are the detection of neutrinos from...
Hyper-Kamiokande is a next generation large-scale water Cherenkov detector. Its fiducial volume will be about an order of magnitude larger than Super-Kamiokande and the detector performance is significantly improved with newly developed photo-sensors. Combination of the Hyper-Kamiokande detector with the upgraded J-PARC neutrino beam will provide unprecedented high statistics of the neutrino...
The Jiangmen Underground Neutrino Observatory (JUNO) is the first multi-kton liquid scintillator detector to come on scene in 2021. It will have 20 kt target mass and an overburden of 1900 m.w.e. It is currently under construction near Kaiping in the Guangdong province in southern China, at a strategic baseline of 53 km from two nuclear power plants. The main physics goal is to determine the...
The Kilometer Cube Neutrino Telescope (KM3NeT) is a next generation undersea neutrino telescope in the Mediterranean sea, currently under deployment. It's low energy configuration ORCA (Oscillations Research with Cosmics in the Abyss) will have a low neutrino energy detection threshold of 3 GeV. The effective mass of the fully completed detector is estimated to be around 5.8 Mega tonnes. The...
We discuss the concept and detection prospects of general neutrino interactions (GNI) as a well-motivated generalisation of the widely-studied non-standard interactions (NSI), both encompassing effects of new physics at energies below the electroweak scale. If GNI (tensor, (pseudo)scalar, and (axial) vector interactions) arise from heavy new physics, they should be related to effective field...
The small neutrino masses might be a consequence of the well known seesaw mechanism, which requires new fields as heavy as $10^{14}$ GeV. However, there are alternative explanations. For example neutrino masses might be generated through loops or via high-dimensional operators. In both cases, the mediating particles can have TeV-scale masses, and if so it might be possible to produced them at the LHC.
ESSnuSB is a design study for an experiment which will attempt to measure CP violation in lepton sector by observing neutrino oscillations at the second muon neutrino to electron neutrino oscillation maximum. The very intense neutrino beam will be generated by uniquely powerful (5 MW average) ESS linear proton accelerator, which is currently under construction near Lund, Sweden. The experiment...
In view of the J-PARC program of upgrades of the beam intensity, the T2K collaboration is preparing towards an increase of the exposure aimed at establishing leptonic CP violation at 3 $\sigma$ level for a significant fraction of the possible $\delta_{CP}$ values. To reach this goal, an upgrade of the T2K near detector ND280 has been launched, with the aim of reducing the overall statistical...
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a Gadolinium doped water Cherenkov detector located in the Booster Neutrino Beam at Fermilab with the primary goal of measuring the final state neutron multiplicity of neutrino-nucleus interactions. The measurement of the neutron yield as a function of the outgoing lepton kinematics will be useful to constrain systematic...
The Muon Ionization Cooling Experiment (MICE) at RAL has collected extensive data to study the ionization cooling of muons. This is a decisive demonstration towards new neutrino sources based on muon storage rings.
Several million individual muon tracks have been recorded passing through a series of focusing magnets in a number of different configurations and a liquid hydrogen or lithium...
MicroBooNE is an 85 ton active-mass liquid argon time projection chamber located in the Booster Neutrino Beam at Fermilab, at a baseline of 470 m. The primary aims of MicroBooNE are to investigate the low-energy excess observed by the MiniBooNE experiment and to make precision measurements of neutrino interactions on argon. In addition, important lessons are being learned about the performance...
The ICARUS collaboration employed the 760-ton T600 detector in a successful three-year physics run at the underground LNGS laboratories studying neutrino oscillations with the CNGS neutrino beam from CERN, and searching for atmospheric neutrino interactions. ICARUS performed a sensitive search for LSND-like anomalous $\nu_e$ appearance in the CNGS beam, which contributed to the constraints the...
In the recent years two unsolved anomalies have appeared during the study of the reactor neutrinos: one related to the neutrino spectral shape, and another to the absolute neutrino flux. The latter, known as the Reactor Antineutrino Anomaly (RAA), presents a deficit in the observed flux compared to the expected one. This anomaly could point to the existence of a light sterile neutrino...
One of the hottest topics in present-day neutrino physics is provided by the hints of sterile species coming from the short-baseline (SBL) anomalies. Waiting for a definitive (dis-)confirmation of these indications by future SBL experiments, other complementary avenues can be explored in the hunt of such elusive particles. An important opportunity is that offered by the long-baseline (LBL)...
In this talk I present a global fit to $\nu_\mu$ disappearance data in the context of 3 + 1 neutrino oscillations. I explain the analysis method for the experiments with most impact in the global picture, namely MINOS/MINOS+, DeepCore and Antares, before presenting the results of the combined fit. To finish I discuss the implications of our results to the global 3 + 1 picture.
Recently the MiniBooNE Collaboration has reported an anomalous excess in muon to electron (anti-)neutrino oscillation data. Combined with long-standing results from the LSND experiment this amounts to a 6.1 sigma evidence for new physics beyond the Standard Model. We develop a framework with 3 active and 3 sterile neutrinos with altered dispersion relations that can explain these anomalies...
MicroBooNE is a liquid argon time projection chamber in the Booster Neutrino Beam at Fermilab. The large event rate and 3 mm wire spacing of the detector provide high-statistics, precise-resolution imaging of neutrino interactions leading to low-threshold, high-efficiency event reconstruction with full angular coverage. As such, this is an ideal place to probe neutrino-argon interactions in...
The European Strategy for Particle Physics has classified in 2013 the long-baseline neutrino programme as one of the four highest-priority scientific objectives. The Neutrino Platform was then born as the CERN enterprise to encourage and support the next generation of accelerator-based neutrino oscillation experiments. Part of the present CERN Medium-Term Plan, the Neutrino Platform has since...
A paper wrote by the speaker together with two colleagues on 2007 restarted the discussion on the topic of relic neutrino detection after many year of silence on the subject. In the paper a process that makes possible the detection of neutrinos of vanishing energy was discussed and its cross sections with beta unstable elements have been evaluated. After this paper it took 10 years to get to...
The discovery of coherent elastic neutrino nucleus scattering (CE$\nu$NS) by the COHERENT experiment set the stage for new investigations within and beyond the standard model's neutrino sector. However, its detection in the fully coherent regime at low neutrino energies is still pending since the associated low nuclear recoils are experimentally challenging in terms of detection threshold and...
We discuss SO(3) as the origin of finite family symmetries such as A4, S4 and A5 in the SUSY framework for the first time. We propose a supersymmetric gauged SO(3)xU(1) flavour model. This model goes through two-step symmetry breaking, first from SO(3) to A4 and then from A4 to residual Z2 and Z3. The model is consistent with current oscillation data and predicts sum rules of mixing...
Numerous experimental efforts have shown that antineutrino-based monitoring provides a non-intrusive means to estimate the fissile content and relative thermal power of nuclear reactors for nonproliferation. However, close proximity to the reactor core is required in order to collect relatively high-statistics data needed for such applications. This has limited the focus of most studies to the...
The SHiP Collaboration has proposed a general-purpose experimental facility operating in beam dump mode at the CERN SPS accelerator with the aim of searching for light, long-lived exotic particles of Hidden Sector models. The SHiP experiment incorporates a muon shield based on magnetic sweeping and two complementary apparatuses. The detector immediately downstream of the muon shield is...
FASER is a new experiment at the LHC aiming to search for light, weakly-interacting new particles, complementing other experiments. A particle detector will be located 480 m downstream of the ATLAS interaction point. In addition to searches for new particles, we also aim to study high-energy neutrinos of all flavors, as there is a huge flux of neutrinos at this location. To date, muon neutrino...
The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double beta decay (0νββ) that has been able to reach the one-ton scale. The detector consists of an array of 988 TeO2 crystals arranged in a compact cylindrical structure of 19 towers. The construction of the experiment was completed in August 2016 with the installation...
The GERDA experiment searches for the neutrinoless double-beta decay using high purity germanium detectors enriched in $^{76}$Ge, simultaneously used as source and detector. The observation of such a process would demonstrate the presence of a Majorana term in the neutrino mass and prove that lepton number is not conserved. The experimental setup is located at the LNGS underground laboratory...
A convincing observation of neutrino-less double beta decay (0$\nu$DBD) relies on the possibility of operating high-energy resolution detectors in background-free conditions.
Scintillating cryogenic calorimeters are one of the most promising tools to fulfill the requirements for a next-generation experiment. Several steps have been taken to demonstrate the maturity of this technique, starting...
The SNO+ experiment is a low background, liquid scintillator neutrino detector with the goal of detecting neutrinoless double beta decay in Tellurium-130. The experiment has been taking data filled with water since early 2017 setting world-leading limits in invisible nucleon decay and a very low background measurement of solar neutrinos. SNO+ is in the process of being filled with liquid...
EXO-200 is a neutrinoless double beta decay (0vBB) experiment using a time projection chamber filled with ~150kg of liquid xenon, enriched in 136Xe. The experiment, located at the Waste Isolation Pilot Plant (WIPP) near Carlsbad New Mexico, recently completed data taking that started in 2011. The last two years of data, after some hardware upgrades, resulted in improved energy resolution. ...
The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double beta decay of 136Xe using a high pressure xenon gas time projection chamber. This detector technology has several key advantages, including excellent energy resolution, powerful event classification based on track topology, and favorable mass scalability. It also offers the tantalising possibility of tagging...
FERS-5200 is a Front-End Readout System designed for the readout of large detector arrays, such as SiPMs, multi-anode PMTs, Silicon Strip detectors, Wire Chambers, GEM, Gas Tubes and others. FERS is a distributed and scalable system, where each unit is a small card that houses 32 or 64 channels with preamplifier, shaper, discriminator, A/D converter, trigger logic, synchronization, local...
