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arXiv 2201.07243hep-phastro-ph.CO
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电弱相变的原初黑洞

Primordial black holes from an electroweak phase transition

Peisi Huang, Ke-Pan Xie

摘要:

我们提出了一种机制,形成原始黑洞(PBH)通过一阶电弱相变(FOEWPT)。FOEWPT是通过扩展标准模型的实单重标量来实现的,而PBH的形成是通过称为费米球的非拓扑孤子的坍缩来实现的。在FOEWPT过程中,这种孤子通过在假真空中捕获费米子而形成,并最终由于内部Yukawa吸引力而坍缩成PBH。我们证明了存在PBH暗物质候选的可能性,典型的实验信号包括FOEWPT引力波和LHC上的多轻子/喷流或位移顶点末态。

英文摘要:

We propose a mechanism that forms primordial black holes (PBHs) via a first-order electroweak phase transition (FOEWPT). The FOEWPT is realized by extending the Standard Model with a real singlet scalar, while the PBH formation is achieved by the collapse of non-topological solitons called Fermi-balls. Such solitons form via trapping fermions in the false vacuum during the FOEWPT, and they eventually collapse into PBHs due to the internal Yukawa attractive force. We demonstrate that a scenario with PBH dark matter candidate can exist, and the typical experimental signals include FOEWPT gravitational waves and the multi-lepton/jet or displaced vertex final states at the LHC.

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