http://arxiv.org/abs/1812.07182
Contact interactions between sterile neutrinos and dark matter particles in a hidden sector have been suggested as a good solution to simultaneously resolve the dark matter problem and anomalies in neutrino experiments. In this non-standard particle physics model, sterile and active neutrinos change their through vacuum oscillations and matter (or Mikheyev–Smirnov–Wolfenstein) oscillations, in which the latter mechanism of flavor oscillation depends strongly on the concentration of dark matter in the Sun’s core. We found that a large concentration of dark matter in the Sun’s interior changes substantially the shape of ${\rm ^8B}$ and $\rm hep$ electron neutrino spectra, but has an insignificant impact on the other neutrino spectra (i.e., $\rm pp$, $\rm pep$, $\rm ^7Be$ and $\rm ^{15}O$, $\rm ^{13}N$ and $\rm ^{17}F$). The strength of the interaction of the dark matter particles with neutrinos depends on an effective coupling constant, $G_\chi$, which is an analog of the Fermi constant for the hidden sector. By using the latest $\rm ^8B$ solar neutrino flux, we found that $G_\chi$ must be smaller than $\rm 0.5\times 10^9$ $G_{\rm F}$ for this particle physics model to be in agreement with the data.
I. Lopes
Wed, 19 Dec 18
31/84
Comments: 10 pages, 7 figures, accepted for publication in ApJ
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