Electroweak Baryogenesis from Dark-Sector C P Violation

Carena, Marcela; Quirós, Mariano; Zhang, Yue

doi:10.1103/PhysRevLett.122.201802

Title: Electroweak Baryogenesis from Dark-Sector $C P$ Violation

Journal Article · Fri May 24 00:00:00 EDT 2019 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.122.201802· OSTI ID:1515598

Carena, Marcela; Quirós, Mariano; Zhang, Yue

We present a novel mechanism of electroweak baryogenesis where $C P$ 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.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: FG02-13ER41958; SC0009924; AC02-07CH11359

OSTI ID:: 1515598

Alternate ID(s):: OSTI ID: 1489392

Report Number(s):: arXiv:1811.09719; FERMILAB-PUB-18-636-T; PRLTAO; 201802

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 122 Journal Issue: 20; ISSN 0031-9007

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 25 works

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