1208.0834 (Nicolas Bernal et al.)

A novel way of constraining WIMPs annihilations in the Sun: MeV
neutrinos    [PDF]

Nicolas Bernal, Justo Martin-Albo, Sergio Palomares-Ruiz

Annihilation of dark matter particles accumulated in the Sun would produce a flux of high-energy neutrinos whose prospects of detection in neutrino telescopes and detectors have been extensively discussed in the literature. However, for many channels into Standard Model particles, there would also be a flux of neutrinos in the MeV range from the decays at rest of muons and positively charged pions. These low-energy neutrinos have never been considered before and they open the possibility to also constrain dark matter annihilation in the Sun into e+e-, mu+mu- or light quarks. Here we perform a detailed analysis using the recent Super-Kamiokande data in the few tens of MeV range to set limits on the WIMP-nucleon scattering cross section for different annihilation channels.

View original: http://arxiv.org/abs/1208.0834