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

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

doi:10.1143/PTP.122.553

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

60 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 language	English
Pages (from-to)	553-559
Number of pages	7
Journal	Progress of Theoretical Physics
Volume	122
Issue number	2
DOIs	https://doi.org/10.1143/PTP.122.553
Publication status	Published - 2009 Aug
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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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 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.",

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AB - 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.

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

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