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arXiv · 0811.3357

Decaying Hidden Gauge Boson and the PAMELA and ATIC/PPB-BETS Anomalies

Chuan-Ren Chen·Mihoko M. Nojiri·Fuminobu Takahashi·T. T. Yanagida
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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 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.

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Chuan-Ren Chen, Mihoko M. Nojiri, Fuminobu Takahashi, T. T. Yanagida. 2009-07-02. Decaying Hidden Gauge Boson and the PAMELA and ATIC/PPB-BETS Anomalies. https://doi.org/10.1143/ptp.122.553

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