Speaker
Alina Vishneva
(DLNP JINR)
Description
Effective magnetic moment of solar neutrinos is constrained using a 1291.5 days dataset of Borexino Phase-II. The sought-for effect from electromagnetic neutrino interaction is the contribution to the low-energy part of the $\nu-e$ scattering cross section affecting the shapes of the electron recoil spectra. Spectral fit of the solar neutrino data leads to the limit of $\mu^{eff}_\nu<2.8\cdot10^{-11}\mu_{B}$ ($90\%$ C. L.). Finally, this result has been used to constrain the elements of the magnetic moments matrix in the mass and flavor bases.
Primary author
Alina Vishneva
(DLNP JINR)
