Conveners
WG 5
- Serguey Petcov (SISSA/INFN, Trieste, Italy)
WG 5
- Vedran Brdar (MPIK Heidelberg)
WG 5
- Zahra Tabrizi
WG 5
- Valentina De Romeri (IFIC CSIC/UV Valencia)
- Valentina De Romeri (IFIC - Universidad de Valencia)
WG 5
- Soo-Bong Kim (Seoul National University)
WG 5
- Sacha Davidson (Centre National de la Recherche Scientifique (FR))
- Sacha Davidson (Werner-Heisenberg-Institut)
We study the status of the reactor antineutrino anomaly in light of new reactor flux models from both conversion and summation methods. In order to unify the calculation of IBD yields for different model predictions, we recalculate IBD yields with 1-order Vogel-Beacom IBD cross section and PDG 2020 inputs at first. And then our global fitting work shows that both the reactor rate and fuel...
I discuss the sensitivity to parameters describing large extra dimensions (LED) at the next generation reactor experiment JUNO, in combination with its near detector TAO. After an introduction to neutrino oscillations with LED parameters, I discuss the effect of systematic uncertainties on the sensitivity. I show how well JUNO+TAO could measure LED parameters if large extra dimensions were...
We present new results of the DANSS experiment on the searches for sterile neutrinos. They are based on approximately 4 million of inverse beta decay events collected at 10.9, 11.9 and 12.9 meters from the reactor core of the 3.1 GW Kalinin Nuclear Power Plant in Russia. The neutrino spectrum dependence on the fuel composition is also presented. We have also measured the reactor power using...
We propose a new approach to explore the neutral-current non-standard neutrino interactions (NSI) in atmospheric neutrino experiments using oscillation dips and valleys in reconstructed muon observables, at a detector like ICAL that can identify the muon charge. We focus on the flavor-changing NSI parameter $\varepsilon_{\mu\tau}$, which has the maximum impact on the muon survival probability...
The Deep Underground Neutrino Experiment (DUNE) is an international project for neutrino physics and proton-decay searches, currently in the design and planning stages. Once built, DUNE will consist of two detectors exposed to the world's most intense neutrino beam. The near detector will record neutrino interactions near the beginning of the beamline, at Fermilab. The other, much larger,...
The PIP-II complex at Fermilab is slated for operation later this decade and can support a MW-class O(1 GeV) proton fixed-target program in addition to the beam required for DUNE. Proton collisions with a fixed target could produce a bright stopped-pion neutrino source. The addition of an accumulator ring allows for a pulsed neutrino source with a high duty factor to suppress backgrounds. ...
Neutrino Oscillations have been confirmed in the last twenty years by a large amount of data and we are now entering in the precision era, when oscillation parameters are going to be determined with a great accuracy. However, current measurements still cannot exclude new physics scenarios like the presence of sterile neutrinos or Non Standard Interactions. We explore the capability of future...
Neutrino oscillations which essentially confirms neutrinos have non zero masses, is the first hint of physics beyond the Standard Model(SM). When neutrinos propagates through matter it interacts with the matter via weak interactions mediating a W or Z bosons. The study of Beyond Standard Model (BSM) physics often comes with some additional unknown coupling of neutrinos called non standard...
Although the majority of neutrino oscillation data can be successfully explained by three-flavour neutrino oscillations, some data can be interpreted using short-baseline neutrino oscillations with a fourth sterile neutrino mass state with $\sim 1~\textrm{eV}^2$ mass. This data comprises the event excesses seen by the LSND and MiniBooNE experiments, and the event deficits seen by the GALLEX...
The FCC : a (Heavy) Neutrino Factory
The Future Circular Collider is at the heart of the vision of the European Strategy for Particle Physics, who placed, as the highest priority for Europe and its international partners, a technical and financial feasibility study of the 100km infrastructure and of the colliders that would be installed in it. The physics programme is based on the sequence of...
The unique design of the LHCb detector, with a flexible trigger and a precision vertex detector, enables competitive and world-best limits on the production of heavy neutral leptons, particularly for those with low masses and produced from decays of B mesons via off-shell W decays. A review of existing results will be presented, and prospects will be discussed.
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...
FASER$\nu$ at the CERN LHC is designed to directly detect collider neutrinos for the first time and study their cross sections at TeV energies. The detector will be located 480 m downstream of the ATLAS interaction point. With FASER$\nu$, the three-flavor neutrino cross-sections will be measured in the currently unexplored energy range between 350 GeV and 5 TeV. In particular, tau-neutrino and...
The NA62 experiment at CERN reports searches for K+ → e+N, K+→μ+N and K+→μ+νX decays,
where N and X are massive invisible particles, using the 2016-2018 data set.
The N particle is assumed to be a heavy neutral lepton, and the results are expressed as upper limits
of O(10−9) and O(10−8) of the neutrino mixing parameter |Ue4|2 and |Uμ4|2, improving on the earlier searches for heavy neutral...
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...
The JSNS2 (J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source) experiment will search for neutrino oscillations over a short 24 m baseline with delta m square near 1 eV square at the J-PARC Materials and Life Science Experimental Facility. The JSNS2 detector is filled with 17 tons of gadolinium-loaded liquid scintillator (LS) with an additional 31 tons of unloaded LS in the...
One of the most important achievements in the field of particle physics is the discovery of neutrino oscillations. Despite already awarded Nobel Prize, neutrino oscillation experiments still have a lot to offer, primarily the discovery of CP violation in the lepton sector is anticipated. The parameters entering the expression for neutrino oscillation probabilities are neutrino mixing...
The neutrino mass determination is an open issue in particle physics. The study of the endpoint of beta decay is the best experimental way to provide a model-independent mea- surement. The HOLMES experiment aims to measure directly the neutrino mass with a calorimetric approach studying the 163Ho electron-capture decay. The very low Q-value (2.8 keV), the half-life (4570 y) and the proximity...
CUPID is a next-generation tonne-scale bolometric neutrinoless double beta decay experiment to probe the Majorana nature of neutrinos and discover Lepton Number Violation if the effective neutrino mass is greater than 10 meV. CUPID will be built on experience, expertise and lessons learned in CUORE, and will be installed in the current CUORE infrastructure in the Gran Sasso underground...
