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arXiv 2007.09681hep-phgr-qc
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暗物质衰变的仿射引力方案

Affine gravitational scenario for dark matter decay

Hemza Azri, Adil Jueid, Canan Karahan, Salah Nasri

摘要:

由于目前暗物质存在的证据只能通过它的引力影响来揭示,因此暗物质与引力的耦合方式必然是最重要的。在这里,不像标准模型扇区通常耦合到度规,暗物质应该只耦合到时空仿射连接通过$Z_2$对称性破缺项。我们表明,这种结构导致之间的耦合暗物质,这被认为是标量,和标准模型希格斯势。这导致暗物质通过希格斯粒子衰变为标准模型粒子,希格斯粒子充当可见光和暗区之间的门户。我们深入研究了不同质量范围的衰变模式,并根据观测数据提供了与仿射引力的非最小耦合的相关界限。此外,我们发现,耦合到希格斯粒子可以足够大,以促进生产的暗物质轻于10 GeV的当前和未来的高能对撞机。

英文摘要:

Since the current evidence of its existence is revealed only through its gravitational influence, the way dark matter couples to gravity must be then of primary importance. Here, unlike the standard model sector which is typically coupled to metric, dark matter is supposed to couple only to spacetime affine connection through a $Z_2$-symmetry breaking term. We show that this structure leads to a coupling between dark matter, which is considered scalar, and the standard model Higgs potential. This induces dark matter decays into standard model particles through the Higgs which acts as a portal between the visible and the dark sectors. We study thoroughly the resulting decay modes for various mass ranges, and provide relevant bounds on the nonminimal coupling to affine gravity in line with observational data. Moreover, we find that the coupling to Higgs can be sufficiently large to facilitate production of dark matter lighter than 10 GeV at current and future high energy colliders.

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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