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Leptogenesis via a varying Weinberg operator: a semi-classical approach

Pascoli, Silvia; Turner, Jessica; Zhou, Ye-Ling

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Authors

Jessica Turner

Ye-Ling Zhou



Abstract

In this paper, we introduce leptogenesis via a varying Weinberg operator from a semi-classical perspective. This mechanism is motivated by the breaking of an underlying symmetry which triggers a phase transition that causes the coupling of the Weinberg operator to become dynamical. Consequently, a lepton anti-lepton asymmetry arises from the interference of the Weinberg operator at two different spacetime points. Using the semi-classical approach, we treat the Higgs as a background field and show that a reflection asymmetry between leptons and anti-leptons is generated in the vicinity of the bubble wall. We solve the equations of motion of the lepton and anti-lepton quasiparticles to obtain the final lepton asymmetry.

Citation

Pascoli, S., Turner, J., & Zhou, Y. (2019). Leptogenesis via a varying Weinberg operator: a semi-classical approach. Chinese Physics C, 43(3), Article 033101. https://doi.org/10.1088/1674-1137/43/3/033101

Journal Article Type Article
Online Publication Date Mar 1, 2019
Publication Date Mar 31, 2019
Deposit Date Mar 14, 2019
Publicly Available Date Mar 28, 2024
Journal Chinese Physics C
Print ISSN 1674-1137
Electronic ISSN 2058-6132
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 43
Issue 3
Article Number 033101
DOI https://doi.org/10.1088/1674-1137/43/3/033101

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.





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