Solar neutrinos with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CE</mml:mi><mml:mi>ν</mml:mi><mml:mi>NS</mml:mi></mml:math> and flavor-dependent radiative corrections
Nityasa Mishra, Louis E. Strigari
Abstract
We examine solar neutrinos in dark matter detectors including the effects of flavor-dependent radiative corrections to the $\mathrm{CE}\ensuremath{\nu}\mathrm{NS}$ cross section. Working within a full three-flavor framework, and including matter effects within the Sun and Earth, detectors with thresholds $\ensuremath{\lesssim}1\text{ }\text{ }\mathrm{keV}$ and exposures of $\ensuremath{\sim}100$ ton-year could identify contributions to the cross section beyond tree level. The differences between the cross sections for the flavors, combined with the difference in fluxes, would provide a new and unique method to study the muon and tau components of the solar neutrino flux. Flavor-dependent corrections induce a small day-night asymmetry of $<|3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}|$ in the event rate, which if ultimately accessible would provide a novel probe of flavor oscillations.