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Title: Electroweak baryogenesis driven by extra top Yukawa couplings

Abstract

We study electroweak baryogenesis driven by the top quark in a general two Higgs doublet model with flavor-changing Yukawa couplings, keeping the Higgs potential CP invariant. With Higgs sector couplings and the additional top Yukawa coupling ρ t t all of O (1), one naturally has sizable CP violation that fuels the cosmic baryon asymmetry. Even if ρ t t vanishes, the favor-changing coupling ρ t c can still lead to successful baryogenesis. Phenomenological consequences such as t c h , τ μ γ electron electric dipole moment, h γ γ , and hhh coupling are discussed.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of Massachusetts, Amherst, MA (United States); Inst. for Basic Science (IBS), Daejeon (Korea, Republic of); National Taiwan Univ., Taipei (Taiwan)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); Ministry of Science and Technology (MOST) (Korea, Republic of); Ministry of Science and Technology (MOST) (Taiwan); National Taiwan Univ. (Taiwan)
OSTI Identifier:
1437777
Alternate Identifier(s):
OSTI ID: 1499160
Grant/Contract Number:  
104-2112-M-002-017-MY2; 105-2112-M-002-018; IBS-R018-D1; 104-2811-M-008-011; 106R104022; 106R8811; SC0011095
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 776 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Fuyuto, Kaori, Hou, Wei-Shu, and Senaha, Eibun. Electroweak baryogenesis driven by extra top Yukawa couplings. Netherlands: N. p., 2018. Web. https://doi.org/10.1016/j.physletb.2017.11.073.
Fuyuto, Kaori, Hou, Wei-Shu, & Senaha, Eibun. Electroweak baryogenesis driven by extra top Yukawa couplings. Netherlands. https://doi.org/10.1016/j.physletb.2017.11.073
Fuyuto, Kaori, Hou, Wei-Shu, and Senaha, Eibun. Mon . "Electroweak baryogenesis driven by extra top Yukawa couplings". Netherlands. https://doi.org/10.1016/j.physletb.2017.11.073.
@article{osti_1437777,
title = {Electroweak baryogenesis driven by extra top Yukawa couplings},
author = {Fuyuto, Kaori and Hou, Wei-Shu and Senaha, Eibun},
abstractNote = {We study electroweak baryogenesis driven by the top quark in a general two Higgs doublet model with flavor-changing Yukawa couplings, keeping the Higgs potential CP invariant. With Higgs sector couplings and the additional top Yukawa coupling ρtt all of O(1), one naturally has sizable CP violation that fuels the cosmic baryon asymmetry. Even if ρtt vanishes, the favor-changing coupling ρtc can still lead to successful baryogenesis. Phenomenological consequences such as t→ch, τ→μγ electron electric dipole moment, h→γγ, and hhh coupling are discussed.},
doi = {10.1016/j.physletb.2017.11.073},
journal = {Physics Letters B},
number = C,
volume = 776,
place = {Netherlands},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2017.11.073

Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1 Fig. 1: A dominant CPV process relevant for the baryon asymmetry, with Higgs bubble wall denoted symbolically as va(x) and vb(y). The vertices can be read off from Eq. (1).

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    Revisiting electroweak phase transition with varying Yukawa coupling constants
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    Cancellation mechanism for the electron electric dipole moment connected with the baryon asymmetry of the Universe
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    • Etesami, Seyed Mohsen; Khatibi, Sara; Mohammadi Najafabadi, Mojtaba
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    SM Higgs boson and t c Z decays in the 2HDM type III with C P violation
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