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Title: Baryogenesis via leptonic CP-violating phase transition

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:
Report Number(s):
IPPP-16-83; FERMILAB-PUB-18-362-T; arXiv:1609.07969
Journal ID: ISSN 0370-2693; 1488136
Grant/Contract Number:
AC02-07CH11359
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
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Leptogenesis; Weinberg operator; Phase transition
OSTI Identifier:
1462228