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Title: Baryogenesis at a lepton-number-breaking phase transition

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

We study a scenario in which the baryon asymmetry of the universe arises from a cosmological phase transition where lepton-number is spontaneously broken. If the phase transition is first order, a lepton-number asymmetry can arise at the bubble wall, through dynamics similar to electroweak baryogenesis, but involving right-handed neutrinos. In addition to the usual neutrinoless double beta decay in nuclear experiments, the model may be probed through a variety of “baryogenesis by-products”, which include a stochastic background of gravitational waves created by the colliding bubbles. Depending on the model, other aspects may include a network of topological defects that produce their own gravitational waves, additional contribution to dark radiation, and a light pseudo-Goldstone boson (majoron) as dark matter candidate.

Research Organization:
Univ. of Chicago, IL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0013642
OSTI ID:
1512500
Journal Information:
Journal of High Energy Physics (Online), Vol. 2017, Issue 10; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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Cited By (5)

Electroweak baryogenesis in the ℤ 3 $$ {\mathbb{Z}}_3 $$ -invariant NMSSM journal November 2017
Review of cosmic phase transitions: their significance and experimental signatures journal June 2019
Gravitational waves from first-order phase transitions: LIGO as a window to unexplored seesaw scales journal February 2019
Gravitational Waves from First-Order Phase Transitions: LIGO as a Window to Unexplored Seesaw Scales text January 2018
ν electroweak baryogenesis journal October 2020

Figures / Tables (3)


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