Conveners
Neutrino: BSM
- Nobuchika Okada
Neutrino: Astrophysics
- Dibyendu Nanda (Osaka University)
Neutrino: Models, Experimental Signatures
- Garv Chauhan (Virginia Tech)
Presentation materials
The Gallium Anomaly (GA) currently stands at a global significance of greater than
The sterile neutrino interpretation of the LSND and MiniBooNE neutrino anomalies is currently being tested at three Liquid Argon detectors: MicroBooNE, SBND, and ICARUS. It has been argued that a degeneracy between
Through an independent study, we show two methods to eliminate...
We investigate the impact of quenching factor uncertainties on the Coherent Elastic Neutrino-Nucleus Scattering (CE
The transition magnetic moment between active and sterile neutrinos is theoretically well-motivated scenario beyond the Standard Model, which can be probed in cosmology, astrophysics, and at terrestrial experiments. In this talk, we focus on the latter by examining such an interaction at proposed lepton colliders. Specifically, in addition to revisiting LEP, we consider CEPC, FCC-ee, CLIC, and...
As neutrino experiments become more precise and explore a wide range of en-
ergies, studying how neutrinos interact with matter has become an important
way to test the Standard Model and search for new physics. In this talk, I will
present our work on neutrino interactions at both low (MeV) and high (GeV)
energy scales. At low energies, we consider coherent elastic...
We present the first detailed study of Standard Model neutrino tridents involving tau leptons at the near detectors of accelerator neutrino facilities. These processes were previously thought to be negligible, even at future facilities like DUNE. However, our full
the DUNE near detector will actually get a...
At upcoming neutrino oscillation experiments, a precise understanding of the neutrino flux is imperative for oscillation studies with sub-percent precision, even with a near detector. Current uncertainties on the neutrino flux are dominated by hadron production uncertainties, making their precise determination crucial. We propose a novel approach to investigate hadron production using near...
Testing new interactions in the neutrino sector, both in current and upcoming experiments, is essential for uncovering the nature of neutrinos. In many extensions of the Standard Model (SM), active neutrinos may engage in self-interactions via the exchange of a new light particle, often motivated by the need to explain empirical puzzles such as the origin of neutrino mass. Cosmological data...
Solar neutrinos provide crucial insights into the Sunโs fusion processes and neutrino oscillations in matter. However, detecting them requires effective suppression of backgrounds. One of these is spallation backgroundsโbeta decays of unstable isotopes produced by cosmic-ray muonsโ which pose a major challenge above 6 MeV. We show that neutron tagging, made possible by the recent addition of...
The KM3NeT collaboration recently reported the observation of KM3-230213A, a neutrino event with an energy of 220 PeV, nearly an order of magnitude more energetic than the highest-energy neutrino in IceCubeโs catalog. Despite its larger effective area and longer data-taking period, IceCube has not observed similar events, leading to a tension quantified between ~2
The existence of relic neutrino background is a strong prediction of the Big Bang cosmology. But because of their extremely small kinetic energy today, the direct detection of relic neutrinos remains elusive. On the other hand, we know very little about the nature of dark matter. In this work, we are putting constraint on the overdensity of the cosmic neutrino background by using them as the...
The neutrinoless double beta decay experiments not only give great prospects for us to understand the nature of neutrinos, but also a efficient way to test the dark matter โ neutrino interactions. We analyze the double beta decay data at PandaX to probe the dark matter โ neutrino interaction. We compute the nuclear matrix element with the presence of this new interaction. We found that the...
We study the kinetic cooling (heating) of old neutron stars due to coherent scattering with relic neutrinos (keV sterile neutrino dark matter) via Standard Model neutral-current interactions by taking into account coherent enhancement, gravitational clustering, neutron degeneracy, Pauli blocking and weak potential. We find that the anomalous cooling of neutron stars due to relic neutrino...
A new neutrino-matter interaction can potentially affect neutrino propagation through matter. In this work, we explore the impact of a flavor-conserving scalar-mediated non-standard neutrino interaction in the supernova neutrino flux. We observe that the presence of scalar interaction involving muon and tau neutrinos (parameterized as
Cosmic neutrino background (CฮฝB) is notoriously difficult to detect due to its low energy. We investigate the scenario in which CฮฝB is scattered off by energetic cosmic rays throughout the history of the Universe, yielding a diffuse flux boosted to higher energies. The non-observation of this flux with current high-energy neutrino experiments already excludes an average cosmic neutrino...
The Leggett-Garg Inequality (LGI) offers a way to test for the
violations of classicality in a system by studying how its measurements
are correlated over time. Long-baseline neutrino oscillation experiments
provide some of the longest distances over which the quantum behavior of any system can be tested.
In my talk, I will present comprehensive results on LGI in connection to 3 existing...
Axions can naturally be very light due to the protection of an (approximate) shift symmetry. Because of their pseudoscalar nature, the long-range force mediated by the axion at tree level is spin dependent, which cannot lead to observable effects between two unpolarized macroscopic objects. At the one-loop level, however, the exchange of two axions does mediate a spin-independent force. This...
The Standard Model predicts a long-range force mediated by a pair of neutrinos, commonly referred to as the "neutrino force". This force scales as
The Project 8 experiment seeks to determine the electron-weighted neutrino mass via the precise measurement of the electron energy in beta decays, with a sensitivity goal of
Project 8 is designed to directly measure the electron neutrino mass using cyclotron radiation emission spectroscopy (CRES). Using cyclotron frequency as a proxy for kinetic energy, the
We explore the possibility that the right-handed neutrino Majorana mass originates from electroweak symmetry breaking. Working within an effective theory with two Higgs doublets, nonzero lepton number is assigned to the bilinear operator built from the two Higgs fields, which is then coupled to the right-handed neutrino mass operator. In tandem with the neutrino Yukawa coupling, following...
We propose a novel strategy to probe heavy neutrinos with non-universal fermion couplings at the Large Hadron Collider (LHC) using vector boson fusion (VBF) processes. Focusing on proton-proton collisions at
We show that, in a
We perform a global extraction of the
