Electroweak Baryogenesis from Dark-Sector Violation
Abstract
We present a novel mechanism of electroweak baryogenesis where violation occurs in a dark sector, comprised of standard model gauge singlets, thereby evading the strong electric dipole moment constraints. In this framework, the background of time-like component of a new gauge boson $$Z^\prime_\mu$$, generated at electroweak temperatures, drives the electroweak sphaleron processes to create the required baryon asymmetry. We first discuss the crucial ingredients for this mechanism to work, and then show that all of them can be elegantly embedded in ultraviolet completions with spontaneously broken gauged lepton number. The models under consideration have a rich phenomenology and can be experimentally probed in leptophilic $$Z^\prime$$ searches, dark matter searches, heavy Majorana neutrino searches, as well as through hunting for new Higgs portal scalars in multi-lepton channels at colliders.
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1515598
- Alternate Identifier(s):
- OSTI ID: 1489392
- Report Number(s):
- arXiv:1811.09719; FERMILAB-PUB-18-636-T
Journal ID: ISSN 0031-9007; PRLTAO; 201802
- Grant/Contract Number:
- FG02-13ER41958; SC0009924; AC02-07CH11359
- Resource Type:
- Journal Article: Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 122 Journal Issue: 20; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Carena, Marcela, Quirós, Mariano, and Zhang, Yue. Electroweak Baryogenesis from Dark-Sector C P Violation. United States: N. p., 2019.
Web. doi:10.1103/PhysRevLett.122.201802.
Carena, Marcela, Quirós, Mariano, & Zhang, Yue. Electroweak Baryogenesis from Dark-Sector C P Violation. United States. https://doi.org/10.1103/PhysRevLett.122.201802
Carena, Marcela, Quirós, Mariano, and Zhang, Yue. Fri .
"Electroweak Baryogenesis from Dark-Sector C P Violation". United States. https://doi.org/10.1103/PhysRevLett.122.201802.
@article{osti_1515598,
title = {Electroweak Baryogenesis from Dark-Sector C P Violation},
author = {Carena, Marcela and Quirós, Mariano and Zhang, Yue},
abstractNote = {We present a novel mechanism of electroweak baryogenesis where CP violation occurs in a dark sector, comprised of standard model gauge singlets, thereby evading the strong electric dipole moment constraints. In this framework, the background of time-like component of a new gauge boson $Z^\prime_\mu$, generated at electroweak temperatures, drives the electroweak sphaleron processes to create the required baryon asymmetry. We first discuss the crucial ingredients for this mechanism to work, and then show that all of them can be elegantly embedded in ultraviolet completions with spontaneously broken gauged lepton number. The models under consideration have a rich phenomenology and can be experimentally probed in leptophilic $Z^\prime$ searches, dark matter searches, heavy Majorana neutrino searches, as well as through hunting for new Higgs portal scalars in multi-lepton channels at colliders.},
doi = {10.1103/PhysRevLett.122.201802},
url = {https://www.osti.gov/biblio/1515598},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 20,
volume = 122,
place = {United States},
year = {2019},
month = {5}
}
Web of Science
Figures / Tables:

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