Hyper-Kamiokande (Hyper-K) is the next upgrade of the currently operating Super-Kamiokande experiment. Hyper-K is a large water Cherenkov detector with a fiducial volume which will be approximately 10 times larger than its precursor. A system of small photomultipliers as implemented in the KM3NeT experiment, the so called multi-PMT module (mPMT), is considered as an option to improve the...
The atmospheric neutrino flux represents a continuous source that can be exploited to infer properties about Cosmic Rays and neutrino oscillation physics. The JUNO observatory, a 20 kt liquid scintillator currently under construction in China, will be able to detect the atmospheric flux, given the large fiducial volume and the excellent energy resolution. In this study, a sample of Monte Carlo...
Future neutrino experiments require measurements of absolute neutrino cross section at the GeV scale with a precision of 1% which nowadays is limited by the uncertainties on neutrino fluxes. The aim of the ENUBET project is to measure the neutrino flux by monitoring positrons from $K^{+}$ $\rightarrow$ $\nu_{e}$ $e^{+}$ $\pi^{0}$ decays on an event by event basis. For this purpose a...
The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector under construction that will study antineutrinos from nuclear reactors at a baseline of around 53 km. The main detector will be located at a depth of 700m and will consist of 20 ktons of liquid scintillator in a 35.4 meter diameter acrylic sphere instrumented by 18,000 20-inch and 25,000 3-inch...
We present four new types of constraints on the lepton mass matrices that can be derived through adequate symmetries imposed on renormalizable models. The models are based on the type-I seesaw mechanism and have three right-handed neutrinos. Each texture leads to a Majorana neutrino mass matrix with only five independent rephasing-invariant parameters to predict nine observables. The...
The observation of two states consistent with being with the B+c(2S) and B∗+c(2S) states, in \ pp collisions at s√= 13 TeV, is presented.
It is obtained by exploiting an event sample corresponding to an integrated luminosity of 143\ fb−1, collected by the CMS experiment
during the whole Run-II of the LHC. These excited b¯c states are observed in the B+cπ+π− inva\ riant mass spectrum, with...
Evidence of finite neutrino masses and cosmological dark matter both imply the necessity of physics beyond Standard Model, and triggered intensive and diverse theoretical and experimental research programs. Germanium ionization detectors with their low threshold and excellent energy resolution are particularly suited to pursue such studies where the final state measurables are nuclear recoils...
The vGEN project is aimed to study neutrino scattering at the close vicinity of the reactor core of Kalinin Nuclear Power Plant. The main interests are connected with the detection of coherent elastic neutrino-nucleus scattering (CEvNS) and magnetic moment of neutrino. A magnetic moment is the fundamental parameter of the neutrino and its investigation may lead to results beyond the standard...
Designed to observe neutrinos from astrophysical sources at TeV-PeV energies, IceCube and its DeepCore in-fill array also observe large numbers of atmospheric neutrinos down to a few GeV. Using these events, DeepCore can measure the “atmospheric” neutrino mixing parameters in an energy range higher than neutrino beam experiments and well above the tau lepton production threshold, making...
DsTau is a project which has been proposed at the CERN SPS to study tau-neutrino production aiming at providing important data for future $\nu_\tau$ studies. A precise measurement of the $\nu_\tau$ cross section would enable a search for new physics effects in $\nu_\tau$ CC interactions. It also has practical importance for the next generation experiments for neutrino oscillation studies and...
One of the many challenges neutrino physics is facing is it's mass hierarchy determination. The Jiangmen Underground Neutrino Observatory (JUNO) is determined on answering to this question by detecting reactor neutrinos generated from nuclear power plants at a medium baseline, around 50 km, featuring an unprecedent energy resolution of 3% @ 1 MeV thanks to a 20 kton of LAB liquid scintillator...
The Type III See-saw Models are extensions of the Standard Model with some fermion triplets, with the purpose of generating neutrino masses. The minimal inverse cases, which can explain the smallness of neutrino masses even having relatively light triplets and large coupling constants, consist in the addiction of 2 or 3 fermion triplets. In this talk I will review the main aspects of these...
We consider the ν μ → ν τ appearance channel in the future Deep Underground Neutrino Experiment (DUNE) which offers a good statistics of the ν_τ sample. In order to measure its impact on constraining the oscillation parameters, we consider several assumptions on the efficiency for ν_τ charged-current signal events (with subsequent τ → e decay) and the related backgrounds and study the effects...
With many current and future neutrino experiments relying on Liquid Argon Time Projection Chamber (LArTPC) technology, characterizing the performance of these detectors is critical. The MicroBooNE experiment is capable of performing numerous measurements to better understand the technology. These include identification and filtering of excess TPC noise, signal calibration, recombination, and...
We analyse 𝐷 decays to two pseudoscalars (𝜋,𝐾) assuming the dominant source of SU(3)𝐹 breaking lies in final state interactions. We obtain an excellent agreement with experimental data and are able to predict CP violation in several channels based on current data on branching ratios and ΔACP. We also make predictions for 𝛿𝐾𝜋 and the branching fraction for the...
The differential distributions of jet fragmentation probability as a function of jet energy for a fixed J/psi energy fraction z are compared to a theoretical model based on the fragmenting jet function (FJF) approach. The analysis is based on pp collisions at sqrt(s) = 8 TeV, corresponding to an integrated luminosity of 19.1 fb−1. These data distingush clearly between different nonrelativistic...
The measurement of exclusive $e^+e^-$ to hadrons processes is a significant part of the physics program of BABAR detector, aimed to improve the calculation of the hadronic contribution to the muon $g−2$ and to study the intermediate dynamics of the processes. We present the most recent results obtained by using the full data set of about 470 $fb^{−1}$ collected by the BABAR experiment at the...
Liquid argon is becoming a popular medium for particle detection, with applications ranging from low-background dark matter searches to high-energy neutrino detection.
Because neutrons represent both an important source of background (e.g., for dark matter experiments) and a product of signal events (e.g., neutrino-induced spallation neutrons), a good understanding of their interactions in...
Abstract.
Neutrinoless double beta decay (0νDBD) is a nuclear process which is permitted within theories more general than the Standard Model (SM) in its original formulation. The discovery of this double-beta decay (DBD) mode would confirm the lepton number violation and the nature of neutrinos (Majorana particles) and could provide important information about neutrino properties still...
The upcoming generation of neutrino telescopes is going to push the knowledge of neutrino physics to the limit, sheding light on several scenarios beyond the Standard Model as well as improving current precision to standard neutrino physics. In particular, in this talk I will present a sensitivity study to neutrino decay of the forthcoming KM3NeT-ORCA experiment. In some theories beyond the...
We consider a four-flavor scenario for the neutrinos where an extra sterile neutrino is introduced to the three families of active neutrinos and study the deviation from the three-flavor scenario in the ultrahigh-energy (UHE) regime. We calculate the possible muon and shower yields at a 1 km2 detector such as IceCube for these neutrinos from distant UHE sources, e.g., gamma-ray bursts, etc....
The production cross section of the prompt open charm mesons has been measured in pp collisions at the LHC center of mass energy of 13 TeV. The data sample corresponds to an integrated luminosity of 29 nb^-1 collected by the CMS experiment in 2016. The differential cross section of the D(*) mesons has been measured in bins of transverse momentum and paseudorapidity and compared to several...
Multiple theories beyond the Standard Model predict the existence of heavy neutrinos, such as the Type I or Type III seesaw mechanisms which can explain the light neutrino masses, or left-right symmetric models which restore parity symmetry in weak interactions at higher energy scale and predict right-handed counterparts to the weak gauge bosons. Searches for such heavy Majorana or Dirac...
The primary goal of MicroBooNE is to address the origin of the excess of low energy electromagnetic-like events observed by MiniBooNE. This talk will present MicroBooNE's progress towards a low-energy excess result, including the status of targeted searches for both single-photon-like and electron-like events.
The ratios of the production cross sections of the Upsilon(nS) mesons are studied using a sample of pp collisions at sqrt(s)=7 TeV, corresponding to an integrated luminosity of 4.8 fb−1, collected with the CMS detector at LHC. The ratios are measured for Upsilon(nS) as a function of the number of charged tracks. Evidence of a decrease of the ratios between the higher and the lower mass states...
