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arXiv 2204.07584hep-ph
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阿基米德杠杆

Archimedean Lever Leptogenesis

Djuna Croon, Hooman Davoudiasl, Rachel Houtz

摘要:

我们提出,如果它们的耦合在早期宇宙中有短暂的较大值,那么通过$\sim 10$ TeV尺度右手中微子的弱尺度leptogenesis是可能的。如果一个光标量$ϕ$被费米子$X$的热布居从它的原点移动一个很长的距离,那么在电弱对称性破缺之前,它就变成了大质量的,这样就可以获得必要的提升参数。费米子$X$可能是一个可行的暗物质候选者;对于合适的参数选择,光标量本身可以通过错位机制成为暗物质。我们发现,在我们的框架中,由$X$和$ϕ$组成的双组分DM人群是一个典型的结果。

英文摘要:

We propose that weak scale leptogenesis via $\sim 10$ TeV scale right-handed neutrinos could be possible if their couplings had transitory larger values in the early Universe. The requisite lifted parameters can be attained if a light scalar $ϕ$ is displaced a long distance from its origin by the thermal population of fermions $X$ that become massive before electroweak symmetry breaking. The fermion $X$ can be a viable dark matter candidate; for suitable choice of parameters, the light scalar itself can be dark matter through a misalignment mechanism. We find that a two-component DM population made up of both $X$ and $ϕ$ is a typical outcome in our framework.

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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