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24–28 Jul 2022
Asia/Shanghai timezone

Primordial black holes from an electroweak phase transition

27 Jul 2022, 09:50
20m

Speaker

Dr Ke-Pan Xie (University of Nebraska-Lincoln)

Description

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.

Primary author

Dr Ke-Pan Xie (University of Nebraska-Lincoln)

Co-author

Prof. Peisi Huang (University of Nebraska-Lincoln)

Presentation materials