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Title: Enabling electroweak baryogenesis through dark matter

Abstract

We study the impact on electroweak baryogenesis from a swifter cosmological expansion induced by dark matter. We detail the experimental bounds that one can place on models that realize it, and we investigate the modifications of these bounds that result from a non-standard cosmological history. The modifications can be sizeable if the expansion rate of the Universe increases by several orders of magnitude. We illustrate the impact through the example of scalar field dark matter, which can alter the cosmological history enough to enable a strong-enough first-order phase transition in the Standard Model when it is supplemented by a dimension six operator directly modifying the Higgs boson potential. We show that due to the modified cosmological history, electroweak baryogenesis can be realized, while keeping deviations of the triple Higgs coupling below HL-LHC sensitivies. The required scale of new physics to effectuate a strong-enough first order phase transition can change by as much as twenty percent as the expansion rate increases by six orders of magnitude.

Authors:
 [1];  [2];  [3]
  1. Univ. of Warsaw (Poland); Univ. of Michigan, Ann Arbor, MI (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States); Univ. of Vienna (Austria)
  3. Univ. of Michigan, Ann Arbor, MI (United States)
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1438014
Grant/Contract Number:  
FG02-95er40899
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 6; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Beyond Standard Model; Cosmology of Theories beyond the SM; Effective field theories; Thermal Field Theory

Citation Formats

Lewicki, Marek, Rindler-Daller, Tanja, and Wells, James D. Enabling electroweak baryogenesis through dark matter. United States: N. p., 2016. Web. doi:10.1007/JHEP06(2016)055.
Lewicki, Marek, Rindler-Daller, Tanja, & Wells, James D. Enabling electroweak baryogenesis through dark matter. United States. doi:10.1007/JHEP06(2016)055.
Lewicki, Marek, Rindler-Daller, Tanja, and Wells, James D. Thu . "Enabling electroweak baryogenesis through dark matter". United States. doi:10.1007/JHEP06(2016)055. https://www.osti.gov/servlets/purl/1438014.
@article{osti_1438014,
title = {Enabling electroweak baryogenesis through dark matter},
author = {Lewicki, Marek and Rindler-Daller, Tanja and Wells, James D.},
abstractNote = {We study the impact on electroweak baryogenesis from a swifter cosmological expansion induced by dark matter. We detail the experimental bounds that one can place on models that realize it, and we investigate the modifications of these bounds that result from a non-standard cosmological history. The modifications can be sizeable if the expansion rate of the Universe increases by several orders of magnitude. We illustrate the impact through the example of scalar field dark matter, which can alter the cosmological history enough to enable a strong-enough first-order phase transition in the Standard Model when it is supplemented by a dimension six operator directly modifying the Higgs boson potential. We show that due to the modified cosmological history, electroweak baryogenesis can be realized, while keeping deviations of the triple Higgs coupling below HL-LHC sensitivies. The required scale of new physics to effectuate a strong-enough first order phase transition can change by as much as twenty percent as the expansion rate increases by six orders of magnitude.},
doi = {10.1007/JHEP06(2016)055},
journal = {Journal of High Energy Physics (Online)},
number = 6,
volume = 2016,
place = {United States},
year = {2016},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 12 works
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Figures / Tables:

Figure 1 Figure 1: The left panel shows examples of potentials at their critical temperatures for several values of $Λ$. The right panel depicts the values of $m$ and $λ$ as functions of $Λ$ (all values except for the dimensionless $λ$ are expressed in GeV).

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