Baryogenesis at a lepton-number-breaking phase transition
Journal Article
·
· Journal of High Energy Physics (Online)
- Univ. of Chicago, Chicago, IL (United States); None
- Univ. of Chicago, Chicago, IL (United States)
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, Chicago, IL (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- SC0013642
- OSTI ID:
- 1512500
- Journal Information:
- Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 10 Vol. 2017; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
ν electroweak baryogenesis
|
journal | October 2020 |
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 |
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