Neutrino Signals from Annihilating/Decaying Dark Matter in the Light of Recent Measurements of Cosmic Ray Electron/Positron Fluxes

摘要

The excess of cosmic-ray electron and positron fluxes measured by the PAMELAsatellite and ATIC balloon experiments may be interpreted as the signals of thedark matter annihilation or decay into leptons. In this letter we show that thedark matter annihilation/decay which reproduces the electron/positron excessmay yield a significant amount of high-energy neutrinos from the Galacticcenter. In the case, future kilometer-square size experiments may confirm sucha scenario, or even the Super-Kamiokande results already put constraints onsome dark matter models.