Leptogenesis in GeV-scale seesaw models

A bstract We revisit the production of leptonic asymmetries in minimal extensions of the Standard Model that can explain neutrino masses, involving extra singlets with Majorana masses in the GeV scale. We study the quantum kinetic equations both analytically, via a perturbative expansion up to third...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2015; no. 10; pp. 1 - 34
Main Authors Hernández, P., Kekic, M., López-Pavón, J., Racker, J., Rius, N.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2015
Subjects
Asymmetry
Classical and Quantum Gravitation
Compatibility
Elementary Particles
Exploration
Invariants
Mathematical analysis
Mathematical models
Neutrinos
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Standard model (particle physics)
String Theory
Cosmology of Theories beyond the SM
Neutrino Physics
Beyond Standard Model
CP violation
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Summary:A bstract We revisit the production of leptonic asymmetries in minimal extensions of the Standard Model that can explain neutrino masses, involving extra singlets with Majorana masses in the GeV scale. We study the quantum kinetic equations both analytically, via a perturbative expansion up to third order in the mixing angles, and numerically. The analytical solution allows us to identify the relevant CP invariants, and simplifies the exploration of the parameter space. We find that sizeable lepton asymmetries are compatible with non-degenerate neutrino masses and measurable active-sterile mixings.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP10(2015)067