标题： 来自WIMPs的μ子的伽马射线：暗物质分析中辐射μ子衰变的实现 显示英文标题

标题： Gamma rays from muons from WIMPs: Implementation of radiative muon decays for dark matter analyses

摘要： 暗物质在伽马射线最终态中的搜索通常利用光子可以从最终态缪子产生的事实。 现代蒙特卡罗生成器和暗物质代码包括了在暗物质湮灭过程中产生的缪子的最终态辐射效应，但忽略了来自随后缪子衰变的O(1%)辐射修正。 在实现这一修正后，我们通过考虑通过标量媒介子产生四缪子的暗物质湮灭情况，展示了该修正对暗物质现象学可能产生的影响。 我们首先表明，一旦考虑到辐射缪子衰变，在计算费米- LAT矮星系限制时，AMS-02正电子过剩将不再容易与这一最终态一致，接着我们表明，在包含相同效应后，费米- LAT银河中心伽马射线过剩可以通过这一最终态得到改善。 我们提供了在流行的暗物质代码micrOMEGAs中实现此效应的代码和表格，为任何产生最终态缪子的模型提供了解决方案。 显示英文摘要

摘要： Dark matter searches in gamma ray final states often make use of the fact that photons can be produced from final state muons. Modern Monte Carlo generators and DM codes include the effects of final state radiation from muons produced in the dark matter annihilation process itself, but neglect the O(1%) radiative correction that arises from the subsequent muon decay. After implementing this correction we demonstrate the effect that it can have on dark matter phenomenology by considering the case of dark matter annihilation to four muons via scalar mediator production. We first show that the AMS-02 positron excess can no longer easily be made consistent with this final state once the Fermi-LAT dwarf limits are calculated with the inclusion of radiative muon decays, and we next show that the Fermi-LAT galactic centre gamma excess can be improved with this final state after inclusion of the same effect. We provide code and tables for the implementation of this effect in the popular dark matter code micrOMEGAs, providing a solution for any model producing final state muons.