Gamma-ray constraints on decaying dark matter

Chuan Ren Chen*, Sourav K. Mandal, Fuminobu Takahashi

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

The anomalies in positron fraction observed in PAMELA and total flux of electrons and positron reported by Fermi can be explained by a decaying dark matter. The agreement between astrophysical background and observed data in anti-proton indicates a lep-tophilic dark matter and constrains the hadronic decay branching ratios. In this work, we study the constrains on decaying rates of a dark matter to various 2-body final states using the Fermi and HESS gamma-ray data. We find that μ+μ- or τ+τ- final state is preferred to simultaneously explain the excesses and meet the gamma-ray constrains.

原文英語
頁(從 - 到)969-975
頁數7
期刊Modern Physics Letters A
25
發行號11-12
DOIs
出版狀態已發佈 - 2010 四月 20

ASJC Scopus subject areas

  • 核能與高能物理
  • 天文和天體物理學
  • 物理與天文學 (全部)

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