PT Journal
AU Bernal, N
   Martin-Albo, J
   Palomares-Ruiz, S
TI A novel way of constraining WIMPs annihilations in the Sun: MeV neutrinos
SO Journal of Cosmology and Astroparticle Physics
JI J. Cosmol. Astropart. Phys.
PY 2013
BP 011
EP 19pp
VL 08
IS 8
DI 10.1088/1475-7516/2013/08/011
LA English
DE dark matter theory; neutrino detectors; neutrino experiments
AB 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 annihilations 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 and computing the evaporation rate of WIMPs from the Sun for all values of the scattering cross section in a consistent way.
ER