Speaker
Description
Electromagnetic properties of neutrinos can be a manifestation of new physics [1].
We study the electromagnetic contribution to elastic neutrino-nucleon and
neutrino-nucleus scattering processes. Following our approach developed for the
case of elastic neutrino-electron [2] and neutrino-proton [3] collisions, in our
formalism we account for possible electromagnetic form factors of massive
neutrinos: the charge, magnetic, electric, and anapole form factors of both diagonal
and transition types. When treating the nucleon electromagnetic vertex, we take
into account not only the charge and magnetic form factors of a nucleon, but also
its electric and anapole form factors. We examine how the effects of the neutrino
electromagnetic properties (in particular, charge radii and magnetic moments) can
be disentangled from those of the strange quark contributions to the nucleon’s
weak neutral current form factors. We also study how the neutrino electromagnetic
form factors can reveal themselves in coherent elastic neutrino-nucleus scattering.
For illustration, we present our results in the case of the 40Ar nuclear target and
neutrino energies typical for the COHERENT experiment.
This work is supported by Scientific and Educational School of Moscow State
University “Fundamental and Applied Space Research” and by the Russian
Foundation for Basic Research under grant no. 20-52-53022-GFEN-A.
[1] C. Giunti and A. Studenikin, Neutrino electromagnetic interactions: A window
to new physics, Rev. Mod. Phys. 87, 531 (2015), arXiv:1403.6344.
[2] K. Kouzakov and A. Studenikin, Electromagnetic properties of massive
neutrinos in low-energy elastic neutrino-electron scattering, Phys. Rev. D 96,
099904 (2017), arXiv:1703.00401.
[3] K. Kouzakov, F. Lazarev, and A. Studenikin, Electromagnetic neutrino
interactions in elastic neutrino-proton scattering, PoS (ICHEP2020) 205
