Cosmic-ray Signal from Dark Matter(16th YKIS Conference Progress in Particle Physics 2008)

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概要

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• We show that the PAMELA anomaly in the positron fraction as well as the ATIC/PPB-BETS excesses in the e^-+e^+ flux are simultaneously explained in our scenario that a hidden U(1)_H gauge boson constitutes dark matter of the Universe and decays into the standard-model particles through a kinetic mixing with an U(1)_<B-L> gauge boson. Interestingly, the B-L charge assignment suppresses an antiproton flux in consistent with the PAMELA and BESS experiments, while the hierarchy between the B-L symmetry breaking scale and the weak scale naturally leads to the right lifetime of O(10^<26>) seconds.

• 2009-08-20

著者

• Chen Chuan-ren

  Ipmu University Of Tokyo

• Chen Chuan-Ren

  IPMU, University of Tokyo

関連論文

• Cosmic-ray Signal from Dark Matter(16th YKIS Conference Progress in Particle Physics 2008)

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