Probing leptogenesis

The focus of this paper lies on the possible experimental tests of leptogenesis scenarios. We consider both leptogenesis generated from oscillations, as well as leptogenesis from out-of-equilibrium decays. As the Akhmedov-Rubakov-Smirnov (ARS) mechanism allows for heavy neutrinos in the GeV range, t...

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Detalhes bibliográficos
Autores: Chun, E. J., Cvetic, G., Dev, P. S. B., Drewes, Alejandro Marcelo, Fong, C. S., Garbrecht, B., Hambye, T., Harz, J., Hernández, P., Kim, C. S., Molinaro, E., Nardi, E., Racker, Juan Diego, Rius, N., Zamora-Saa, J.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/87069
Acesso em linha:http://hdl.handle.net/11336/87069
Access Level:acceso abierto
Palavra-chave:EXTENSIONS OF ELECTROWEAK GAUGE SECTOR
NEUTRINO INTERACTIONS
NONSTANDARD-MODEL NEUTRINOS
RIGHT-HANDED NEUTRINOS
SUPERSYMMETRIC MODELS
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descrição
Resumo:The focus of this paper lies on the possible experimental tests of leptogenesis scenarios. We consider both leptogenesis generated from oscillations, as well as leptogenesis from out-of-equilibrium decays. As the Akhmedov-Rubakov-Smirnov (ARS) mechanism allows for heavy neutrinos in the GeV range, this opens up a plethora of possible experimental tests, e.g. at neutrino oscillation experiments, neutrinoless double beta decay, and direct searches for neutral heavy leptons at future facilities. In contrast, testing leptogenesis from out-of-equilibrium decays is a quite difficult task. We comment on the necessary conditions for having successful leptogenesis at the TeV-scale. We further discuss possible realizations and their model specific testability in extended seesaw models, models with extended gauge sectors, and supersymmetric leptogenesis. Not being able to test high-scale leptogenesis directly, we present a way to falsify such scenarios by focusing on their washout processes. This is discussed specifically for the left-right symmetric model and the observation of a heavy WR, as well as model independently when measuring L = 2 washout processes at the LHC or neutrinoless double beta decay.

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