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Title: Enabling electroweak baryogenesis through dark matter

Journal Article · · Journal of High Energy Physics (Online)
 [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)

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.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-95er40899
OSTI ID:
1438014
Journal Information:
Journal of High Energy Physics (Online), Vol. 2016, Issue 6; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Cited By (8)

The impact of non-minimally coupled gravity on vacuum stability journal October 2016
(Non-)Thermal Production of WIMPs during Kination journal October 2018
Gravitational wave, collider and dark matter signals from a scalar singlet electroweak baryogenesis text January 2017
Gravitational wave and collider implications of electroweak baryogenesis aided by non-standard cosmology text January 2016
The impact of non-minimally coupled gravity on vacuum stability text January 2016
Gravitational wave and collider implications of electroweak baryogenesis aided by non-standard cosmology text January 2016
Electroweak baryogenesis from a dark sector text January 2017
Axion Miniclusters in Modified Cosmological Histories text January 2018

Figures / Tables (7)


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