Description
Coherent elastic neutrino-nucleus scattering(CEvNS) is a neutral-current neutrino process in which a low-energy neutrino elastically scatters off a target nucleus. For neutrino energies below 100 MeV, it is the dominant cross-section; however, it eluded detection until recently due to the low nuclear recoil. In 2017, the COHERENT Collaboration made the first observation of CEvNS using a CsI scintillating crystal. A precise measurement of the CEvNS cross-section will test new physics including constraints on nonstandard neutrino-quark interactions, the weak nuclear radius, and the particle nature of dark matter. In addition, development of CEvNS-sensitive technologies is useful for low-threshold WIMP dark matter searches and for sterile neutrino searches.
In fall 2016, the COHERENT Collaboration deployed a 24-kg single-phase liquid argon detector, COH-Ar-10, to the Spallation Neutron Source at Oak Ridge National Laboratory. In spring 2020, COHERENT reported the second observation of CEvNS and the first observation of CEvNS on a low-N target using this detector. In this poster, we detail efforts to expand the analysis over a larger data set and improve the sensitivity of our measurement.
| Collaboration | COHERENT |
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