Electromagnetic properties of neutrinos from scattering on bound electrons in atom

Abstract

We consider the effects of bound atomic electrons scattered by solar neutrinos due to the electromagnetic properties of neutrinos. This necessiate considering the recoil of atomic nucleus, which should be considered in the momentum conservation, but that effect to the energy conservation is negligible. This effect changes the kinematic behavior of the scattered electron compared to that scattered on free electrons. We apply this effect to the recent XENON1T data, but the bounds obtained from this is not very restrictive. We obtained the bounds: the (transition) magnetic moment $|f_{\alpha \beta }|\le 0.86\times 10^{-7}$ (times the electron Bohr magneton) and the charge radius $|\tilde{r}|<4.30\times 10^{-17}\mathrm{cm}$. For a non-vanishing millicharge ($\epsilon$), the allowed bound is shown in the ${\tilde{r}}^2-\epsilon$ plane.

12 pages, 4 figures

References in corpus (3)

• Excess Electronic Recoil Events in XENON1T
• Limiting neutrino magnetic moments with Borexino Phase-II solar neutrino data
• Galactic 511 keV line from MeV millicharged dark matter

Cited by in corpus (5)

• A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• Solar Active-Sterile Neutrino Conversion with Atomic Effects at Dark Matter Direct Detection Experiments
• Neutrino magnetic moment and inert doublet dark matter in a Type-III radiative scenario
• Scattering of low energy neutrinos and antineutrinos by atomic electrons
• Scattering of low energy neutrinos and antineutrinos by neon and argon