Decaying hidden gauge boson and the PAMELA and ATIC/PPB-BETS anomalies

Chuan Ren Chen, Mihoko M. Nojiri, Fuminobu Takahashi, Tsutomu T. Yanagida

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

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 standardmodel 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(1026) seconds.

Original languageEnglish
Pages (from-to)553-559
Number of pages7
JournalProgress of Theoretical Physics
Volume122
Issue number2
DOIs
Publication statusPublished - 2009 Aug 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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