Conveners
Neutrino: BSM
- Nobuchika Okada
Neutrino: Astrophysics
- Dibyendu Nanda (Osaka University)
Neutrino: Models, Experimental Signatures
- Garv Chauhan (Virginia Tech)
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Dr Garv Chauhan (Arizona State University)19/05/2025, 16:30Neutrino Physics
The Gallium Anomaly (GA) currently stands at a global significance of greater than $5\sigma$. Most viable BSM solutions quickly run into strong tensions with reactor and solar neutrino data. In this talk, I'll argue that the GA resolution requires the ability to probe spectral features and oscillation behavior, therefore requires a new detection strategy for low-energy neutrinos. Firstly, I'll...
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Tao Zhou (Texas A&M University)19/05/2025, 16:45Neutrino Physics
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 $\nu_\mu \to \nu_e$ and $\nu_e \to \nu_e$ oscillations significantly degrades their sensitivity to sterile neutrinos.
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Through an independent study, we show two methods to eliminate... -
Yulun Li19/05/2025, 17:00Neutrino Physics
We investigate the impact of quenching factor uncertainties on the Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS) cross section measurements. From the recent results of Dresden-II, CONUS+, and COHERENT, we present that no choice of quenching factor can bring these three data sets into mutual agreement. We further present the quenching factor dependence on sensitivity of these...
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Mr Samiur R. Mir (Oklahoma State University)19/05/2025, 17:15Neutrino Physics
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...
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Sam Carey (Wayne State University)19/05/2025, 17:30Neutrino Physics
As neutrino experiments become more precise and explore a wide range of en-
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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... -
Diego Lopez Gutierrez (Washington University in St Louis)19/05/2025, 17:45Neutrino Physics
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 $2\to 4$ calculation, including both coherent and incoherent scatterings, reveals that
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the DUNE near detector will actually get a... -
George Parker (Johannes Gutenberg-Universitรคt Mainz)19/05/2025, 18:00Neutrino Physics
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...
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Saeid Foroughi-Abari (Carleton University)19/05/2025, 18:15Neutrino Physics
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...
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Obada Nairat (The Ohio State University)20/05/2025, 14:00Neutrino Physics
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...
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Dibya S. Chattopadhyay (Oklahoma State University)20/05/2025, 14:15Neutrino Physics
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$\sigma$ and 3.5$\sigma$,...
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Writasree Maitra (Washington University in St. Louis)20/05/2025, 14:30Neutrino Physics
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...
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Yihong Zhong (Shanghai Jiao Tong University)20/05/2025, 14:45Neutrino Physics
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...
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Takuya Okawa (Washington University)20/05/2025, 15:00Neutrino Physics
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...
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Sudipta Das (University of Iowa)20/05/2025, 15:15Neutrino Physics
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 $\eta_{\mu\mu}$ and $\eta_{\tau\tau}$, respectively) can...
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Xiaolin Qi (Virginia Tech)20/05/2025, 15:30Neutrino Physics
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...
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Murshed Alam (Oklahoma State University)20/05/2025, 15:45Neutrino Physics
The Leggett-Garg Inequality (LGI) offers a way to test for the
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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... -
Bingrong Yu (Cornell University)20/05/2025, 16:30Neutrino Physics
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...
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Chinhsan Sieng (Cornell University)20/05/2025, 16:45Neutrino Physics
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 $G_F^2/r^5$, where $G_F$ is the Fermi constant. However, this scaling breaks down at distances $r \lesssim \sqrt{G_F}$, where the four-Fermi approximation becomes invalid. In this talk, I present a complete expression for the neutrino force that is...
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Prof. Luiz de Viveiros (Pennsylvania State University)20/05/2025, 17:00Neutrino Physics
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 $40\,\mathrm{meV/c}^2$. We have developed a technique called Cyclotron Radiation Emission Spectroscopy (CRES), which allows single electron detection and characterization through the measurement of cyclotron radiation...
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Ehteshamul Karim (University of Pittsburgh)20/05/2025, 17:15Neutrino Physics
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 $\beta$-decay electron endpoint spectrum for magnetically-trapped electrons produced by a gaseous tritium source can be measured with high precision using CRES. Following the successful demonstration of CRES...
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Wenjie Huang20/05/2025, 17:30Neutrino Physics
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...
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Yin-Fa Shen (Vanderbilt University (US))20/05/2025, 17:45Neutrino Physics
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 $\sqrt{s} = 13\,\mathrm{TeV}$, we investigate final states characterized by a muon, missing energy, and two forward/backward jets, originating from a virtual heavy neutrino. Unlike...
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Mr Cem Murat Ayber (Carleton University)20/05/2025, 18:00Neutrino Physics
We show that, in a $U(1)_{R-L}$-symmetric supersymmetric model, the pseudo-Dirac bino and wino can give rise to three light neutrino masses through effective operators, generated at the messenger scale between a SUSY breaking hidden sector and the visible sector. The neutrino--bino/wino mixing follows a hybrid type I+III inverse seesaw pattern. The light neutrino masses are governed by the...
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Arie Bodek (University of Rochester (US))20/05/2025, 18:15Neutrino Physics
We perform a global extraction of the $\rm^{12}C$, $\rm^{40}Ca$ and $\rm^{56}Fe$ longitudinal (${\cal R}_L$) and transverse (${\cal R}_T$) nuclear electromagnetic response functions from an analysis of all available electron scattering data on these nuclei. The response functions are extracted for energy transfer $\nu$, spanning the nuclear excitation, quasielastic (QE) scattering with...
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