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arXiv 2107.14548hep-ph
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作为弱相互作用暗物质候选者的大质量引力子

Massive Gravitons as Feebly Interacting Dark Matter Candidates

Haiying Cai, Giacomo Cacciapaglia, Seung J. Lee

摘要:

我们详细介绍了我们发现的手征增强大质量自旋2引力子的生产截面,低于电弱对称性破缺标度,使他们成为理想的暗物质候选人的冻结机制。结果是独立的物理在高尺度,并指向质量在keV-MeV范围。因此,引力子是一种亚MeV的暗物质粒子,受到小尺度星系结构的青睐。我们应用新的计算与多膜的Randall-Sundrum模型,显示了一个显着的参数空间的前两个大质量引力子饱和的暗物质遗迹密度。

英文摘要:

We detailed our discovery of a chiral enhancement in the production cross sections of massive spin-2 gravitons, below the electroweak symmetry breaking scale, that makes them ideal dark matter candidates for the freeze-in mechanism. The result is independent of the physics at high scales, and points toward masses in the keV- MeV range. The graviton is, therefore, a sub-MeV dark matter particle, as favored by the small scale galaxy structures. We apply the novel calculation to a Randall-Sundrum model with multiple branes, showing a significant parameter space where the first two massive gravitons saturate the dark matter relic density.

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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