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

Abstract

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.

Authors:
 [1];  [1];  [1]
  1. Univ. of Chicago, Chicago, IL (United States)
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1512500
Grant/Contract Number:  
SC0013642
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: 2017; Journal Issue: 10; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Cosmology of Theories beyond the SM; Global Symmetries; CP violation; Thermal Field Theory

Citation Formats

Long, Andrew J., Tesi, Andrea, and Wang, Lian -Tao. Baryogenesis at a lepton-number-breaking phase transition. United States: N. p., 2017. Web. doi:10.1007/jhep10(2017)095.
Long, Andrew J., Tesi, Andrea, & Wang, Lian -Tao. Baryogenesis at a lepton-number-breaking phase transition. United States. doi:10.1007/jhep10(2017)095.
Long, Andrew J., Tesi, Andrea, and Wang, Lian -Tao. Fri . "Baryogenesis at a lepton-number-breaking phase transition". United States. doi:10.1007/jhep10(2017)095. https://www.osti.gov/servlets/purl/1512500.
@article{osti_1512500,
title = {Baryogenesis at a lepton-number-breaking phase transition},
author = {Long, Andrew J. and Tesi, Andrea and Wang, Lian -Tao},
abstractNote = {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.},
doi = {10.1007/jhep10(2017)095},
journal = {Journal of High Energy Physics (Online)},
number = 10,
volume = 2017,
place = {United States},
year = {2017},
month = {10}
}

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Cited by: 4 works
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