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Department of Physics pres.

HEP-Astro Seminar | New Results on Coherent Elastic Neutrino-Nucleus Scattering From COHERENT

Kate Scholberg (Duke University)

Please contact Beth Demkowski, demkowsk@umich.edu for Zoom link.

Coherent elastic neutrino-nucleus scattering (CEvNS) is a process in which a neutrino scatters off an entire nucleus at low momentum transfer, and for which the observable signature is a low-energy nuclear recoil. It represents a background for direct dark matter detection experiments, as well as a possible signal for astrophysical neutrinos. Furthermore, because the process is cleanly predicted in the Standard Model, a measurement is sensitive to beyond-the-Standard-Model physics, such as non-standard interactions of neutrinos. It was measured for the first time by the COHERENT collaboration using the high-quality source of pion-decay-at-rest neutrinos from the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory and a CsI[Na] scintillator detector. COHERENT has recently observed CEvNS in argon, a lighter nucleus, also. This talk will describe COHERENT's recent results, the status and plans of COHERENT's suite of detectors at the SNS, and future physics reach.

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