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Title: Electroweak Baryogenesis From Dark CP Violation

Abstract

We present a novel mechanism of electroweak baryogenesis where \textit{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.

Authors:
 [1];  [2];  [3]
  1. Chicago U., KICP
  2. Barcelona, IFAE
  3. Northwestern U.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1489392
Report Number(s):
arXiv:1811.09719; FERMILAB-PUB-18-636-T
1704944
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
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 CP Violation. United States: N. p., 2018. Web.
Carena, Marcela, Quirós, Mariano, & Zhang, Yue. Electroweak Baryogenesis From Dark CP Violation. United States.
Carena, Marcela, Quirós, Mariano, and Zhang, Yue. Fri . "Electroweak Baryogenesis From Dark CP Violation". United States. https://www.osti.gov/servlets/purl/1489392.
@article{osti_1489392,
title = {Electroweak Baryogenesis From Dark CP Violation},
author = {Carena, Marcela and Quirós, Mariano and Zhang, Yue},
abstractNote = {We present a novel mechanism of electroweak baryogenesis where \textit{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 = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}