Status of CEvNS on LAr from the COHERENT Collaboration

Coherent elastic neutrino-nucleus scattering (CEvNS) is a neutral current interaction first observed by the COHERENT Collaboration in 2017 using CsI(Na). A follow-up measurement was made in 2020 with a single-phase 24 kg liquid argon (LAr) detector, consistent with the predicted N^2 dependence of the CEvNS interaction cross section. Precise measurements of the CEvNS cross section allow for constraints on nonstandard neutrino-quark interactions, determination of the weak nuclear radius, and tests of sub-GeV models of dark matter. Current efforts to develop a 750 kg LAr detector will be presented, which will allow for low-threshold CEvNS measurements and provide sensitivity to inelastic charged current and neutral current interactions. An update on the analysis from a larger data set by the 24 kg detector will also be discussed.