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arXiv 1003.3401hep-phastro-ph.HE
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引力子暗物质的新衰变模式

New decay modes of gravitino dark matter

Ki-Young Choi, Carlos E. Yaguna

摘要:

本文研究了双线性R宇称破坏超对称情形下引力子暗物质的三体衰变。特别地,对于低于Mw的引力子质量,我们检验了引力子衰变为轻子+W^*(轻子f \bar f ')和ν+Z^*(νf \bar f)的过程。在计算了引力子衰变到这些三体末态的速率并研究了它们对超对称参数的依赖性之后,我们发现这些新的衰变模式往往比在以前的工作中考虑的两体衰变更重要。因此,引力子的寿命和它的分支比大大修改,具有重要意义的引力子暗物质的间接检测。

英文摘要:

We consider the three-body decays of gravitino dark matter in supersymmetric scenarios with bilinear R-parity violation. In particular, gravitino decays into lepton+W^* (lepton f\bar f') and ν+Z^* (νf\bar f) are examined for gravitino masses below Mw. After computing the gravitino decay rates into these three-body final states and studying their dependence on supersymmetric parameters, we find that these new decay modes are often more important than the two-body decay, into a photon and a neutrino, considered in previous works. Consequently, the gravitino lifetime and its branching ratios are substantially modified, with important implications for the indirect detection of gravitino dark matter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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