Conveners
Parallel: WG5: Dark Sector
- Julia Gehrlein (Colorado State University)
Parallel: WG5: Astro BSM
- Shiqi Yu (MSU)
Parallel: WG5: Theory
- Peter Denton (Brookhaven National Laboratory)
Parallel: WG5: Short-Baseline
- Minerba Betancourt (Fermilab)
The data collected by the MicroBooNE detector, an 85-tonne active mass liquid argon time projection chamber (LArTPC) at Fermilab, is ideally suited to search for physics beyond the standard model due to its excellent calorimetric, spatial, and energy resolution. We will present several recent results using data recorded with Fermilab’s two neutrino beams: a first search for dark-trident...
New physics contributions to the (anti)neutrino-nucleon elastic scattering process can be constrained by precision measurements, with controlled Standard Model uncertainties. In a large class of new physics models, interactions involving charged leptons of different flavor can be related, and the large muon flavor component of accelerator neutrino beams can mitigate the lepton mass suppression...
The MicroBooNE experiment features a liquid argon time projection chamber (LArTPC) within Fermilab's Booster Neutrino Beam. LArTPC technology distinguishes between electron and photon interactions, crucial for identifying the source of the long-standing anomalous excess reported by MiniBooNE. Initial MicroBooNE results have challenged the electron interpretation and achieved the world's most...
ICARUS is a liquid argon time projection chamber operating as the far detector in the Short-Baseline Neutrino (SBN) program. The detector is located at Fermilab along the Booster Neutrino Beamline and off axis from the NuMI beamline. We present an analysis that utilizes the ICARUS neutrino detector in order to search for dimuon signals from long lived particles produced by kaons from the NuMI...
Many kinds of new-physics signatures are predicted from extensions to the Standard Model, motivating searches in extant data and sensitivity estimates in future planned neutrino detectors to look for evidence of physics beyond the Standard Model. A major thrust in recent years has been to formulate model-independent frameworks to facilitate analyses with detailed treatments of experimental...
High-energy astrophysical neutrinos, recently discovered by IceCube up to energies of several PeV, opened a new window to the high-energy Universe. Despite IceCube's excellent muon flavour identification, tau neutrinos have still not been unambiguously detected. To address this limitation, we present a concept for a large-scale observatory of astrophysical tau neutrinos in the 1 – 100 PeV...
The neutrinos in the diffuse supernova neutrino background (DSNB) travel over cosmological distances and this provides them with an excellent opportunity to interact with dark relics. We show that a cosmologically-significant relic population of keV-mass sterile neutrinos with strong self-interactions could imprint their presence in the DSNB. The signatures of the self-interactions would be...
The discovery of new, flavor-dependent neutrino interactions would provide compelling evidence of physics beyond the Standard Model. We focus on interactions generated by the several anomaly-free, gauged, abelian lepton number symmetries that introduce a new matter potential sourced by electrons and neutrons, potentially impacting neutrino flavor oscillations. We estimate constraints on these...
The Cosmic Neutrino Background (C$\nu$B) constitutes the last observable prediction of the standard cosmological model, which has yet to be detected directly. In this talk, I will discuss how the coherent scattering of neutrinos off dense neutron matter can lead to an additional cooling channel in neutron stars (NSs). I will then discuss the prediction of a boosted C$\nu$B flux on Earth from...
Dark matter direct detection experiments like XENONnT, PANDAX-4T and LUX-ZEPLIN are sensitive to solar neutrino-electron scatterings, neutrino-nucleus scattering, and potentially to the Migdal effect. I'll discuss how solar neutrino-electron scatterings allow to constrain the electromagnetic properties of neutrinos, further constraining neutrinophilic light dark sectors. Furthermore, I'll...
We examine solar neutrinos in dark matter detectors, focusing on flavor-dependent radiative corrections to the coherent elastic neutrino-nucleus scattering (CE$\nu$NS) cross section within a three-flavor framework, incorporating matter effects from the Sun and Earth. Detectors with thresholds $\lesssim 1$ keV and exposures of $\sim 100$ ton-years could probe beyond-tree-level effects and offer...
Paleo-detectors utilize the fact that mineral lattices can retain deformations in their structure caused by charged particle interactions. We consider the search for proton decay, $p\rightarrow\overline{\nu}K^+$, in such detectors via the possible crystal damage produced by the endpoint of the charged kaon. Atmospheric neutrino induced backgrounds render this search impossible on Earth, but in...
The decay-at-rest of charged kaons produces monoenergetic muon neutrinos with an energy of 236 MeV. The study of these neutrinos at short baselines allows us to constrain new neutrino interactions. In this work, we study kaon decay-at-rest (KDAR) neutrinos at the \jsns experiment where the J-PARC Spallation Neutron Source (JSNS) will produce such types of neutrinos with decay-at-rest processes...
We present a comprehensive analysis of nonstandard neutrino interactions with the dark sector in an effective field theory (EFT) framework, considering exact analytic formulae for the differential scattering cross sections of neutrinos with scalar, fermionic, and vector dark matter (DM) for dark sector models with mediators of different spins. We then implement the full catalog of...
The Short-Baseline Near Detector (SBND) is one of three Liquid Argon Time Projection Chamber (LArTPC) neutrino detectors positioned along the axis of the Booster Neutrino Beam (BNB) at Fermilab, as part of the Short-Baseline Neutrino (SBN) Program. The detector is currently being commissioned and is collecting neutrino beam data. SBND is characterized by superb imaging capabilities and will...
The ICARUS collaboration first employed the 760-ton T600 detector in a successful three-year physics run at the underground LNGS laboratory in the CERN Neutrino to Gran Sasso beam. Then after a significant overhaul at CERN, the T600 detector was installed at Fermilab as the far detector for the Short-Baseline Neutrino (SBN) Program at Fermilab. The SBN program is designed to definitively test...
The JSNS2 (J-PARC Sterile Neutrino Search at the J-PARC Spallation NeutronSource) experiment is
searching for neutrino oscillations over a short 24 m baseline with Δm2 near 1 eV square.
We took the long physics runs in 2021,2022,2023 and 2024 with ~40% of approved POT by J-PARC.
We’re doing analysis from those data, and we have a few new results; such as the side-band analysis of the...
The MicroBooNE experiment utilizes a liquid-argon time projection chamber to detect neutrinos both on-axis from Fermilab’s Booster Neutrino Beam (BNB) and off-axis from the Neutrinos at the Main Injector (NuMI) beam. MicroBooNE is investigating the observed anomalous excess of electron neutrino events reported by the MiniBooNE experiment. In this presentation, we report on searches for...
STEREO is a high-precision experiment that studies the antineutrinos produced by the highly enriched U-235 core of the nuclear reactor at the Institute Laue-Langevin (ILL) in Grenoble, France. The experiment aims to investigate two key anomalies observed in previous reactor neutrino experiments. The first anomaly, known as the "Reactor Antineutrino Anomaly (RAA)," involves a discrepancy in the...
We explore the connection between the low-scale CP-violating Dirac phase $(\delta)$ and high-scale leptogenesis in a Left-Right Symmetric Model (LRSM) with scalar bidoublets and doublets. The model's fermion sector includes one sterile neutrino $(S_L)$ per generation, enabling a double seesaw mechanism. This mechanism, performed via type-I seesaw twice, generates a Majorana mass term for heavy...