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arXiv 1712.01239hep-ph
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亲轻子$Z'$模型中的DAMPE电子-正电子过剩

DAMPE Electron-Positron Excess in Leptophilic $Z'$ model

Karim Ghorbani, Parsa Hossein Ghorbani

摘要:

最近,暗物质粒子探测器(DAMPE)报告了宇宙射线的电子-正电子通量过剩,这被解释为质量约为$1.5$ TeV的暗物质粒子。我们提出了一个亲轻子$Z'$方案,其中包括一个狄拉克费米子暗物质候选者,除了解释观察到的DAMPE过剩外,还能够通过各种实验/观测约束,包括WMAP/Planck的残余密度值,LHC上不可见的Higgs衰变约束,电子-正电子散射中的LEP约束,μ子异常磁矩约束,Fermi-LAT数据,最后是来自XENON 1 t/LUX的直接检测实验极限。通过计算质量约为$1.5$ TeV的暗物质产生的电子-正电子通量,我们表明,该模型预测的DAMPE观察到的峰值。

英文摘要:

Recently the DArk Matter Particle Explorer (DAMPE) has reported an excess in the electron-positron flux of the cosmic rays which is interpreted as a dark matter particle with the mass about $1.5$ TeV. We come up with a leptophilic $Z'$ scenario including a Dirac fermion dark matter candidate which beside explaining the observed DAMPE excess, is able to pass various experimental/observational constraints including the relic density value from the WMAP/Planck, the invisible Higgs decay bound at the LHC, the LEP bounds in electron-positron scattering, the muon anomalous magnetic moment constraint, Fermi-LAT data, and finally the direct detection experiment limits from the XENON1t/LUX. By computing the electron-positron flux produced from a dark matter with the mass about $1.5$ TeV we show that the model predicts the peak observed by the DAMPE.

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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