Artículo
Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
Fecha de publicación:
02/2019
Editorial:
Springer
Revista:
Journal of High Energy Physics
ISSN:
1126-6708
e-ISSN:
1029-8479
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
With an emphasis on unitarity and CPT requirements, we study the inclusion of CP-violating processes in baryogenesis at next-to-leading order, particularly those involving the top Yukawa interaction in leptogenesis. We show that there are more contributions than previously considered, but also important cancellations. Some of these involve the interference of connected with disconnected diagrams. We also discuss on the application of the Kinoshita-Lee-Nauenberg theorem to treat the infrared divergences that are common at next-to-leading order. Finally, we calculate the CP asymmetry in the three-body decay of a sterile neutrino into a lepton and top quarks.
Palabras clave:
BEYOND STANDARD MODEL
,
COSMOLOGY OF THEORIES BEYOND THE SM
,
CP VIOLATION
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Articulos(IATE)
Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Citación
Racker, Juan Diego; Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions; Springer; Journal of High Energy Physics; 2019; 2; 2-2019; 1-18
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