Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session T05: Recent Developments in Accelerator-Based Neutrino PhysicsInvited
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Sponsoring Units: DPF Chair: Sekhar Chivukula, University of California, San Diego Room: MG Salon E - 3rd Floor |
Tuesday, April 18, 2023 10:45AM - 11:21AM |
T05.00001: Current long-baseline neutrino experiments and future prospects Invited Speaker: Ashley Back Long-baseline neutrino oscillation searches look for the appearance of electron (anti)neutrinos and the disappearance of muon (anti)neutrinos, in a powerful and high-purity muon (anti)neutrino beam. The beam is sampled close to its source and then again with a far defector hundreds of kilometers away. Current long-baseline experiments use this technique to measure the parameters that govern neutrino mixing. Collecting data for most of the past decade, these experiments continue working towards precision measurements of neutrino mixing, yet key quantities, such as charge-parity violation in the lepton sector and the ordering of neutrino masses, remain unknown. NOvA uses the powerful NuMI beam at Fermilab, directed towards a far detector 810 km away in Ash River, Minnesota. T2K has a shorter baseline of 295 km, using a beam from J-PARC, in Tokai, directed at the Super-Kamiokande detector near Kamioka, Japan. Both experiments are working towards a joint analysis of their data that will be crucial for resolving degeneracies in their individual measurements. In this talk, I will provide a snapshot of recent results from both experiments and discuss progress toward a NOvA-T2K joint analysis. The joint analysis will also set the scene for the next generation of long-baseline experiments (such as DUNE and T2HK). They will start taking data towards the end of this decade and provide many high-precision measurements of neutrino oscillations over the coming decades. |
Tuesday, April 18, 2023 11:21AM - 11:57AM |
T05.00002: The Short Baseline Neutrino Program Invited Speaker: Minerba Betancourt The Short Baseline Neutrino (SBN) program consists of liquid argon time-projection chamber detectors located along the Booster Neutrino Beam at Fermi National Accelerator Laboratory. Its main goals include searches of light sterile neutrinos with unprecedented sensitivity in eV^2 mass range, a rich program of neutrino interaction measurements and novel searches for physics beyond the Standard Model. In the SBN experiment, the near detector (SBND) is 110 m from the Booster beam and the far detector (ICARUS) is located 600 m from the neutrino source. In this talk I will focus on the status of SBND and ICARUS experiments. |
Tuesday, April 18, 2023 11:57AM - 12:33PM |
T05.00003: The COHERENT experimental program: an update Invited Speaker: Phillip S Barbeau The COHERENT collaboration operates a suite of detectors at the Spallation Neutron Source (SNS), at Oak Ridge National Laboratory. These detectors, located in a narrow undergound hallway, are designed to measure and search for neutrino, neutron and dark matter interactions from the SNS source. In 2017, the collaboraiton produced the first measurement of Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) on a small 14 kg CsI[Na] crystal scintillator, followed two years later by the second measurement of CEvNS using liquid argon. The collaboration has also recently put strong constraints on the charged-current inelastic neutrino-lead cross section, and measured the inclusive charged-current neutrino cross section on I-127. I will briefly discuss the current status of the CEvNS and inelastic measurement programs, and their uses for studying neutrino properties and neutrino-nucleus interactions. I will also discuss future plans for the detector suite, including measurements on sodium, thorium, deuterium, along with ongoing work to ton-scale detector systems. |
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