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Title: Higgs troika for baryon asymmetry

Abstract

To explain the baryon asymmetry of the Universe, we extend the Standard Model (SM) with two additional Higgs doublets with small vacuum expectation values. The additional Higgs fields interact with SM fermions through complex Yukawa couplings, leading to new sources of $CP$ violation. We propose a simple flavor model with $$\mathcal{O}$$(1) or less Yukawa couplings for quarks and charged leptons, consistent with current flavor constraints. To generate neutrino masses and the baryon asymmetry, right-handed neutrinos in the ~ 0.1 - 10 TeV range couple to the "Higgs Troika." The new Higgs doublet masses are at or above the TeV scale, allowing for asymmetric decays into SM lepton doublets and right-handed neutrinos. The asymmetry in lepton doublets is then processed into a baryon asymmetry, similar to leptogenesis. Since the masses of the new fields could be near the TeV scale, there is potentially a rich high energy collider phenomenology, including observable deviations in the 125 GeV Higgs decay into muons and taus, as well as detectable low energy signals such as the electron EDM or $µ → eγ$. Hence, this is in principle a testable model for generation of baryon asymmetry.

Authors:
; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Kansas, Lawrence, KS (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); State of Kansas EPSCoR Grant Program; University of Kansas
OSTI Identifier:
1603739
Alternate Identifier(s):
OSTI ID: 1607971; OSTI ID: 1630736; OSTI ID: 1772017
Report Number(s):
BNL-213782-2020-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 055010
Grant/Contract Number:  
SC0012704; SC0019474
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 101 Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Davoudiasl, Hooman, Lewis, Ian M., and Sullivan, Matthew. Higgs troika for baryon asymmetry. United States: N. p., 2020. Web. doi:10.1103/PhysRevD.101.055010.
Davoudiasl, Hooman, Lewis, Ian M., & Sullivan, Matthew. Higgs troika for baryon asymmetry. United States. doi:https://doi.org/10.1103/PhysRevD.101.055010
Davoudiasl, Hooman, Lewis, Ian M., and Sullivan, Matthew. Fri . "Higgs troika for baryon asymmetry". United States. doi:https://doi.org/10.1103/PhysRevD.101.055010.
@article{osti_1603739,
title = {Higgs troika for baryon asymmetry},
author = {Davoudiasl, Hooman and Lewis, Ian M. and Sullivan, Matthew},
abstractNote = {To explain the baryon asymmetry of the Universe, we extend the Standard Model (SM) with two additional Higgs doublets with small vacuum expectation values. The additional Higgs fields interact with SM fermions through complex Yukawa couplings, leading to new sources of $CP$ violation. We propose a simple flavor model with $\mathcal{O}$(1) or less Yukawa couplings for quarks and charged leptons, consistent with current flavor constraints. To generate neutrino masses and the baryon asymmetry, right-handed neutrinos in the ~ 0.1 - 10 TeV range couple to the "Higgs Troika." The new Higgs doublet masses are at or above the TeV scale, allowing for asymmetric decays into SM lepton doublets and right-handed neutrinos. The asymmetry in lepton doublets is then processed into a baryon asymmetry, similar to leptogenesis. Since the masses of the new fields could be near the TeV scale, there is potentially a rich high energy collider phenomenology, including observable deviations in the 125 GeV Higgs decay into muons and taus, as well as detectable low energy signals such as the electron EDM or $µ → eγ$. Hence, this is in principle a testable model for generation of baryon asymmetry.},
doi = {10.1103/PhysRevD.101.055010},
journal = {Physical Review D},
number = 5,
volume = 101,
place = {United States},
year = {2020},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
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DOI: https://doi.org/10.1103/PhysRevD.101.055010

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