Elastic scattering signals of solar neutrinos with enhanced baryonic currents

Abstract

The coupling of the baryonic current to new neutrino states ν_b with strength in excess of the weak interactions is a viable extension of the Standard Model. We analyze the signature of ν_b appearance in the solar neutrino flux that gives rise to an elastic scattering signal in dark matter direct detection and in solar neutrino experiments. This paper lays out an in-depth study of ν_b detection prospects for current and future underground rare event searches. We scrutinize the model as a possible explanation for the reported anomalies from DAMA, CoGeNT, and CRESST-II and confront it with constraints from other null experiments.

30 pages, 9 figures; code-correction to Xenon ionization (S2) analyses; Xenon10 constraint in Fig.6 is weakened and Xenon100 projection in Fig.7 is revised