Electroweak-like baryogenesis with new chiral matter

Fujikura, Kohei; Harigaya, Keisuke; Nakai, Yuichiro; R., Wang, Isaac

doi:10.1007/jhep07(2021)224

Cited by 5 publications

(4 citation statements)

References 136 publications

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“…It would be an interesting direction to investigate correlations between the radiative θ parameter and other (flavor) observables in the minimal LR symmetric model: The lepton flavor universality violation in B → D ( * ) lν (R(D ( * ) ) anomaly) (the recent review [64,65]), the Cabibbo angle anomaly (the recent review [66]) and the W -boson mass anomaly [67] could be explained [68][69][70]. Furthermore, the investigation of a correlation with electroweak-like baryogenesis in the right-handed sector should be an attractive prospect [71,72].…”

Section: Case For the Gim By Universal Vector-like Massmentioning

confidence: 99%

Novel loop-diagrammatic approach to QCD $θ$ parameter and application to the left-right model

Hisano¹,

Kitahara²,

Osamura³

et al. 2023

Preprint

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When the QCD axion is absent in full theory, the strong CP problem has to be explained by an additional mechanism, e.g., the left-right symmetry. Even though tree-level QCD θ parameter is restricted by the mechanism, radiative corrections to θ are mostly generated, which leads to a dangerous neutron electric dipole moment (EDM). The ordinary method for calculating the radiative θ utilizes an equation θ = arg det m loop q based on the chiral rotations of complex quark masses. In this paper, we point out that when full theory includes extra heavy quarks, the ordinary method is unsettled for the extra quark contributions and does not contain its full radiative corrections. We formulate a novel method to calculate the radiative corrections to θ through a direct loop-diagrammatic approach, which should be more robust than the ordinary one. As an application, we investigate the radiative θ in the minimal left-right symmetric model. We first confirm a seminal result that two-loop level radiative θ completely vanishes (corresponding to oneloop corrections to the quark mass matrices). Furthermore, we estimate the size of a nonvanishing radiative θ at three-loop level. It is found that the resultant induced neutron EDM is comparable to the current experimental bound, and the expected size is restricted by the perturbative unitarity bound in the minimal left-right model.

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Section: Case For the Gim By Universal Vector-like Massmentioning

confidence: 99%

Novel loop-diagrammatic approach to QCD $θ$ parameter and application to the left-right model

Hisano¹,

Kitahara²,

Osamura³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…It would be an interesting direction to investigate correlations between the radiative θ parameter and other (flavor) observables in the minimal LR symmetric model: the lepton flavor universality violation in B → D ( * ) lν (R(D ( * ) ) anomaly) (the recent review [71,72]), the Cabibbo angle anomaly (the recent review [73]) and the W -boson mass anomaly [74] could be explained [75][76][77]. Furthermore, the investigation of a correlation with electroweak-like baryogenesis in the right-handed sector should be an attractive prospect [78,79].…”

Section: Jhep03(2023)150mentioning

confidence: 99%

Novel loop-diagrammatic approach to QCD θ parameter and application to the left-right model

Hisano

Kitahara

Osamura

et al. 2023

J. High Energ. Phys.

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When the QCD axion is absent in full theory, the strong CP problem has to be explained by an additional mechanism, e.g., the left-right symmetry. Even though tree-level QCD $$ \overline{\theta} $$ θ ¯ parameter is restricted by the mechanism, radiative corrections to $$ \overline{\theta} $$ θ ¯ are mostly generated, which leads to a dangerous neutron electric dipole moment (EDM). The ordinary method for calculating the radiative $$ \overline{\theta} $$ θ ¯ utilizes an equation $$ \overline{\theta}=-\arg\ \det {m}_q^{\textrm{loop}} $$ θ ¯ = − arg det m q loop based on the chiral rotations of complex quark masses. In this paper, we point out that when full theory includes extra heavy quarks, the ordinary method is unsettled for the extra quark contributions and does not contain its full radiative corrections. We formulate a novel method to calculate the radiative corrections to $$ \overline{\theta} $$ θ ¯ through a direct loop-diagrammatic approach, which should be more robust than the ordinary one. As an application, we investigate the radiative $$ \overline{\theta} $$ θ ¯ in the minimal left-right symmetric model. We first confirm a seminal result that two-loop level radiative $$ \overline{\theta} $$ θ ¯ completely vanishes (corresponding to one-loop corrections to the quark mass matrices). Furthermore, we estimate the size of a non-vanishing radiative $$ \overline{\theta} $$ θ ¯ at three-loop level. It is found that the resultant induced neutron EDM is comparable to the current experimental bound, and the expected size is restricted by the perturbative unitarity bound in the minimal left-right model.

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“…3.3, we consider a model with additional chiral fermions with lepton and SU (2) R charges. The B − L symmetry then has a mixed anomaly SU (2) R [50] and the wash-out is avoided.…”

Section: Baryon Number Violation By Su (2) R Sphaleronmentioning

confidence: 99%

“…B − L asymmetry is created from the axion rotation and SU (2) R sphaleron processes, and is frozen upon the SU (2) R phase transition. Specifically, we employ new fermions with a three-generation structure [50,51]:…”

Section: Chiral Mattermentioning

confidence: 99%

Axiogenesis from $SU(2)_R$ phase transition

Harigaya,

Wang

2021

Preprint

Self Cite

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The baryon asymmetry of the universe may be explained by rotations of the QCD axion in field space and baryon number violating processes. We consider the minimal extension of the Standard Model by a non-Abelian gauge interaction, SU (2) R , whose sphaleron process violates baryon number. Assuming that axion dark matter is also created from the axion rotation by the kinetic misalignment mechanism, the mass scale of the SU (2) R gauge boson is fixed as a function of the QCD axion decay constant, and vise versa. Significant portion of the parameter space has already been excluded by new gauge boson searches, and the high-luminocity LHC will further probe the viable parameter space.

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Electroweak-like baryogenesis with new chiral matter

Cited by 5 publications

References 136 publications

Novel loop-diagrammatic approach to QCD $θ$ parameter and application to the left-right model

Novel loop-diagrammatic approach to QCD $θ$ parameter and application to the left-right model

Novel loop-diagrammatic approach to QCD θ parameter and application to the left-right model

Axiogenesis from $SU(2)_R$ phase transition

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