Baryogenesis via leptonic CP-violating phase transition

Baryogenesis via leptonic CP-violating phase transition

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 dynamicall...

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Main Authors: Silvia Pascoli, Jessica Turner, Ye-Ling Zhou
Format: Article
Language:English
Published: Elsevier 2018-05-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269318301989
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spelling doaj-af24ac9296c245ecb4852852ca64153b2020-11-24T21:05:36ZengElsevierPhysics Letters B0370-26932018-05-01780313318Baryogenesis via leptonic CP-violating phase transitionSilvia Pascoli0Jessica Turner1Ye-Ling Zhou2Institute for Particle Physics Phenomenology, Department of Physics, Durham University, Durham DH1 3LE, UKInstitute for Particle Physics Phenomenology, Department of Physics, Durham University, Durham DH1 3LE, UK; Theoretical Physics Department, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USAInstitute for Particle Physics Phenomenology, Department of Physics, Durham University, Durham DH1 3LE, UK; Corresponding author.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. Keywords: Leptogenesis, Weinberg operator, Phase transitionhttp://www.sciencedirect.com/science/article/pii/S0370269318301989
collection DOAJ
language English
format Article
sources DOAJ
author Silvia Pascoli
Jessica Turner
Ye-Ling Zhou
spellingShingle Silvia Pascoli
Jessica Turner
Ye-Ling Zhou
Baryogenesis via leptonic CP-violating phase transition
Physics Letters B
author_facet Silvia Pascoli
Jessica Turner
Ye-Ling Zhou
author_sort Silvia Pascoli
title Baryogenesis via leptonic CP-violating phase transition
title_short Baryogenesis via leptonic CP-violating phase transition
title_full Baryogenesis via leptonic CP-violating phase transition
title_fullStr Baryogenesis via leptonic CP-violating phase transition
title_full_unstemmed Baryogenesis via leptonic CP-violating phase transition
title_sort baryogenesis via leptonic cp-violating phase transition
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2018-05-01
description 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. Keywords: Leptogenesis, Weinberg operator, Phase transition
url http://www.sciencedirect.com/science/article/pii/S0370269318301989
work_keys_str_mv AT silviapascoli baryogenesisvialeptoniccpviolatingphasetransition
AT jessicaturner baryogenesisvialeptoniccpviolatingphasetransition
AT yelingzhou baryogenesisvialeptoniccpviolatingphasetransition
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