Elastic Neutrino-Atom Scattering as a Probe of Neutrino Millicharge and Magnetic Moment

Neutrino scattering on atomic systems at low-energy transfer is a powerful tool for searching the neutrino electromagnetic interactions. The regime of coherent elastic neutrino-atom scattering, i.e., when atom recoils as pointlike particle, can be effectively fulfilled in case tritium antineutrinos. We present theoretical calculations processes such targets H, $^2$H, $^3$He, and $^4$He %, $^{12}$C atoms. show how effects properties, namely millicharge magnetic moment, may manifest themselves atomic-recoil spectra. Our results used planning experiments (in particular, with superfluid He-4).