Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions

Autores
Racker, Juan Diego
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Racker, Juan Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Materia
BEYOND STANDARD MODEL
COSMOLOGY OF THEORIES BEYOND THE SM
CP VIOLATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/120799
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/120799
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributionsRacker, Juan DiegoBEYOND STANDARD MODELCOSMOLOGY OF THEORIES BEYOND THE SMCP VIOLATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1With 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.Fil: Racker, Juan Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaSpringer2019-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/120799Racker, 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; 1-181126-67081029-8479CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/JHEP02(2019)042info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2FJHEP02%282019%29042info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:18:31Zoai:ri.conicet.gov.ar:11336/120799instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:18:31.266CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
title Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
spellingShingle Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
Racker, Juan Diego
BEYOND STANDARD MODEL
COSMOLOGY OF THEORIES BEYOND THE SM
CP VIOLATION
title_short Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
title_full Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
title_fullStr Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
title_full_unstemmed Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
title_sort Unitarity and CP violation in leptogenesis at NLO: General considerations and top Yukawa contributions
dc.creator.none.fl_str_mv Racker, Juan Diego
author Racker, Juan Diego
author_facet Racker, Juan Diego
author_role author
dc.subject.none.fl_str_mv BEYOND STANDARD MODEL
COSMOLOGY OF THEORIES BEYOND THE SM
CP VIOLATION
topic BEYOND STANDARD MODEL
COSMOLOGY OF THEORIES BEYOND THE SM
CP VIOLATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Racker, Juan Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
description 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.
publishDate 2019
dc.date.none.fl_str_mv 2019-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/120799
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
1126-6708
1029-8479
CONICET Digital
CONICET
url http://hdl.handle.net/11336/120799
identifier_str_mv 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
1126-6708
1029-8479
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/JHEP02(2019)042
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2FJHEP02%282019%29042
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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