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arXiv 2103.07592hep-ph
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通量介导的暗物质

Flux-mediated Dark Matter

Yoo-Jin Kang, Hyun Min Lee, Adriana G. Menkara, Jiseon Song

摘要:

我们提出了一种新的机制,费米子暗物质和标准模型之间的沟通,只有通过四形式的流量。这四种形式的耦合是负责松弛的希格斯质量的正确的值和重新加热的伪标量场从最小的初始位移。我们发现,同时存在的赝标量耦合到费米子暗物质和通量诱导的Higgs混合引起的暗物质到SM粒子的未抑制的湮灭目前,而从XENON1T的直接检测边界可以避免。我们建议探索有趣的体参数空间的模型,其中暗物质湮灭占主导地位的一对单态样标量与类似的质量为暗物质。

英文摘要:

We propose a new mechanism to communicate between fermion dark matter and the Standard Model (SM) only through the four-form flux. The four-form couplings are responsible for the relaxation of the Higgs mass to the correct value and the initial displacement of the reheating pseudo-scalar field from the minimum. We show that the simultaneous presence of the pseudo-scalar coupling to fermion dark matter and the flux-induced Higgs mixing gives rise to unsuppressed annihilations of dark matter into the SM particles at present, whereas the direct detection bounds from XENON1T can be avoided. We suggest exploring the interesting bulk parameter space of the model for which dark matter annihilates dominantly into a pair of singlet-like scalars with similar mass as for dark matter.

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