Search Publications
Ruling out the light weakly interacting massive particle explanation of the Galactic 511 keV line
Vincent, Aaron C.; Wilkinson, Ryan J.; BÅ`hm, Céline +1 more
Over the past few decades, an anomalous 511 keV gamma-ray line has been observed from the center of the Milky Way. Dark matter (DM) in the form of light (≲10 MeV ) weakly interacting massive particles (WIMPs) annihilating into electron-positron pairs has been one of the leading hypotheses of the observed emission. Given the small required cross se…
Radiative seesaw model with degenerate Majorana dark matter
Okada, Hiroshi; Nomura, Takaaki; Orikasa, Yuta
We study a three-loop-induced neutrino mass model with exotic vectorlike isospin doublet leptons which contain a dark matter candidate. Then we explore lepton flavor violations and dark matter physics in a coannihilation system. In this paper, the nearly degenerate Majorana fermion dark matter can naturally be achieved at the two-loop level, while…