High-energy cosmic-ray positrons from hidden-gauge-boson dark matter

Chuan Ren Chen, Fuminobu Takahashi, T. T. Yanagida

研究成果: 雜誌貢獻文章同行評審

59 引文 斯高帕斯(Scopus)


We provide a scenario in which a hidden U (1) 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, our model can naturally account for the steep rise in the positron fraction recently reported by PAMELA. Moreover, we find that due to the charge assignment of U (1)B - L, only a small amount of antiprotons are produced in the decay, which is also consistent with the PAMELA and other observational data.

頁(從 - 到)255-259
期刊Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
出版狀態已發佈 - 2009 三月 30

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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