Physics results from the first COHERENT observation of coherent elastic neutrino-nucleus scattering in argon and their combination with cesium-iodide data

Cadeddu M.;Dordei F.;Giunti C.;Li Y. F.;Picciau E.;Zhang Y. Y.

2020-01-01

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Abstract

We present the results on the radius of the neutron distribution in Ar40, on the low-energy value of the weak mixing angle, and on the electromagnetic properties of neutrinos obtained from the analysis of the coherent neutrino-nucleus elastic scattering data in argon recently published by the COHERENT Collaboration, taking into account proper radiative corrections. We present also the results of the combined analysis of the COHERENT argon and cesium-iodide data for the determination of the low-energy value of the weak mixing angle and the electromagnetic properties of neutrinos. In particular, the COHERENT argon data allow us to improve significantly the only existing laboratory bounds on the electric charge qμμ of the muon neutrino and on the transition electric charge qμτ.