Gamma rays and positrons from a decaying hidden gauge boson - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: We study a scenario that a hidden gauge boson constitutes the dominantcomponent of dark matter and decays into the standard model particles through agauge kinetic mixing. Interestingly, gamma rays and positrons produced from thedecay of hidden gauge boson can explain both the EGRET excess of diffuse gammarays and the HEAT anomaly in the positron fraction. The spectra of the gammarays and the positrons have distinctive features; the absence of line emissionof the gamma ray and a sharp peak in the positron fraction. Such features maybe observed by the GLAST and PAMELA satellites.



Author: Chuan-Ren Chen, Fuminobu Takahashi, T. T. Yanagida

Source: https://arxiv.org/







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