Primordial black holes as a probe of strongly first-order electroweak phase transition

Primordial black holes can be produced by density fluctuations generated from delayed vacuum decays of first-order phase transition. The primordial black holes generated at the electroweak phase transition have masses of about 10−5 solar mass. Such primordial black holes in the mass range can be tes...

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Main Authors: Katsuya Hashino, Shinya Kanemura, Tomo Takahashi
Format: Article
Language:English
Published: Elsevier 2022-10-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269322003951
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author Katsuya Hashino
Shinya Kanemura
Tomo Takahashi
author_facet Katsuya Hashino
Shinya Kanemura
Tomo Takahashi
author_sort Katsuya Hashino
collection DOAJ
description Primordial black holes can be produced by density fluctuations generated from delayed vacuum decays of first-order phase transition. The primordial black holes generated at the electroweak phase transition have masses of about 10−5 solar mass. Such primordial black holes in the mass range can be tested by current and future microlensing observations, such as Subaru HSC, OGLE, PRIME and Roman telescope. Therefore, we may be able to explore new physics models with strongly first-order electroweak phase transition via primordial black holes. We examine this possibility by using models with first-order electroweak phase transition in the standard model effective field theory with dimension 6 and 8 operators. We find that depending on parameters of the phase transition a sufficient number of primordial black holes can be produced to be observed by above mentioned experiments. Our results would suggest that primordial black holes can be used as a new probe of models with strongly first-order electroweak phase transition, which has complementarity with measurements of the triple Higgs boson coupling at future collider experiments and observations of gravitational waves at future space-based interferometers.
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spelling doaj.art-629dd9e8fcab4d22bb6db281d31cbe2e2022-12-22T03:10:51ZengElsevierPhysics Letters B0370-26932022-10-01833137261Primordial black holes as a probe of strongly first-order electroweak phase transitionKatsuya Hashino0Shinya Kanemura1Tomo Takahashi2Center for High Energy Physics, Peking University, Beijing 100871, China; Corresponding author.Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, JapanDepartment of Physics, Saga University, Saga 840-8502, JapanPrimordial black holes can be produced by density fluctuations generated from delayed vacuum decays of first-order phase transition. The primordial black holes generated at the electroweak phase transition have masses of about 10−5 solar mass. Such primordial black holes in the mass range can be tested by current and future microlensing observations, such as Subaru HSC, OGLE, PRIME and Roman telescope. Therefore, we may be able to explore new physics models with strongly first-order electroweak phase transition via primordial black holes. We examine this possibility by using models with first-order electroweak phase transition in the standard model effective field theory with dimension 6 and 8 operators. We find that depending on parameters of the phase transition a sufficient number of primordial black holes can be produced to be observed by above mentioned experiments. Our results would suggest that primordial black holes can be used as a new probe of models with strongly first-order electroweak phase transition, which has complementarity with measurements of the triple Higgs boson coupling at future collider experiments and observations of gravitational waves at future space-based interferometers.http://www.sciencedirect.com/science/article/pii/S0370269322003951
spellingShingle Katsuya Hashino
Shinya Kanemura
Tomo Takahashi
Primordial black holes as a probe of strongly first-order electroweak phase transition
Physics Letters B
title Primordial black holes as a probe of strongly first-order electroweak phase transition
title_full Primordial black holes as a probe of strongly first-order electroweak phase transition
title_fullStr Primordial black holes as a probe of strongly first-order electroweak phase transition
title_full_unstemmed Primordial black holes as a probe of strongly first-order electroweak phase transition
title_short Primordial black holes as a probe of strongly first-order electroweak phase transition
title_sort primordial black holes as a probe of strongly first order electroweak phase transition
url http://www.sciencedirect.com/science/article/pii/S0370269322003951
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