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

Abstract

In this Letter, 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 this semi-classical approach, we treat the Higgs as a background field and show a reflection asymmetry between the leptons and anti-leptons is generated in the vicinity of the bubble wall. Here, we solve the equations of motion of the lepton and anti-lepton quasiparticles to obtain the final lepton asymmetry.

Authors:
 [1];  [2];  [1]
  1. Durham Univ., Durham (United Kingdom)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1471726
Report Number(s):
arXiv:1808.00475; IPPP/18/66; FERMILAB-PUB-18-330-T
Journal ID: ISSN 1674-1137; 1684848
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Chinese Physics. C, High Energy Physics and Nuclear Physics
Additional Journal Information:
Journal Volume: 43; Journal Issue: 3; Journal ID: ISSN 1674-1137
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; leptogenesis; Weinberg operator; phase transition

Citation Formats

Pascoli, Silvia, Turner, Jessica, and Zhou, Ye -Ling. Leptogenesis via a varying Weinberg operator: a semi-classical approach. United States: N. p., 2019. Web. doi:10.1088/1674-1137/43/3/033101.
Pascoli, Silvia, Turner, Jessica, & Zhou, Ye -Ling. Leptogenesis via a varying Weinberg operator: a semi-classical approach. United States. doi:10.1088/1674-1137/43/3/033101.
Pascoli, Silvia, Turner, Jessica, and Zhou, Ye -Ling. Fri . "Leptogenesis via a varying Weinberg operator: a semi-classical approach". United States. doi:10.1088/1674-1137/43/3/033101. https://www.osti.gov/servlets/purl/1471726.
@article{osti_1471726,
title = {Leptogenesis via a varying Weinberg operator: a semi-classical approach},
author = {Pascoli, Silvia and Turner, Jessica and Zhou, Ye -Ling},
abstractNote = {In this Letter, 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 this semi-classical approach, we treat the Higgs as a background field and show a reflection asymmetry between the leptons and anti-leptons is generated in the vicinity of the bubble wall. Here, we solve the equations of motion of the lepton and anti-lepton quasiparticles to obtain the final lepton asymmetry.},
doi = {10.1088/1674-1137/43/3/033101},
journal = {Chinese Physics. C, High Energy Physics and Nuclear Physics},
number = 3,
volume = 43,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
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