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Title: Baryogenesis via leptonic CP-violating phase transition

Abstract

Here, we propose a new mechanism to generate a lepton asymmetry based on the vacuum CP-violating phase transition (CPPT). This approach differs from classical thermal leptogenesis as a specific seesaw model, and its UV completion, need not be specified. The lepton asymmetry is generated via the dynamically realised coupling of the Weinberg operator during the phase transition. This mechanism provides a connection with low-energy neutrino observables.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Durham Univ., Durham (United Kingdom)
  2. Durham Univ., Durham (United Kingdom); 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:
1462228
Report Number(s):
IPPP-16-83; FERMILAB-PUB-18-362-T; arXiv:1609.07969
Journal ID: ISSN 0370-2693; 1488136; TRN: US1902132
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 780; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
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. Baryogenesis via leptonic CP-violating phase transition. United States: N. p., 2018. Web. doi:10.1016/j.physletb.2018.03.011.
Pascoli, Silvia, Turner, Jessica, & Zhou, Ye -Ling. Baryogenesis via leptonic CP-violating phase transition. United States. doi:10.1016/j.physletb.2018.03.011.
Pascoli, Silvia, Turner, Jessica, and Zhou, Ye -Ling. Tue . "Baryogenesis via leptonic CP-violating phase transition". United States. doi:10.1016/j.physletb.2018.03.011. https://www.osti.gov/servlets/purl/1462228.
@article{osti_1462228,
title = {Baryogenesis via leptonic CP-violating phase transition},
author = {Pascoli, Silvia and Turner, Jessica and Zhou, Ye -Ling},
abstractNote = {Here, we propose a new mechanism to generate a lepton asymmetry based on the vacuum CP-violating phase transition (CPPT). This approach differs from classical thermal leptogenesis as a specific seesaw model, and its UV completion, need not be specified. The lepton asymmetry is generated via the dynamically realised coupling of the Weinberg operator during the phase transition. This mechanism provides a connection with low-energy neutrino observables.},
doi = {10.1016/j.physletb.2018.03.011},
journal = {Physics Letters. Section B},
number = C,
volume = 780,
place = {United States},
year = {2018},
month = {3}
}

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