Measuring CP-violating observables in rare top decays at the LHC

Autores
Saha, Pratishruti; Kiers, Ken; Bhattacharya, Bhubanjyoti; London, David; Szynkman, Alejandro Andrés; Melendez, Jordan
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this paper we consider CP-violating new-physics contributions to the decay t→bb¯c. We examine the prospects for detecting such new physics at the LHC, which requires studying the process gg→t(→bb¯c)t¯(→b¯ℓν¯). We find two observables that can be used to reveal the presence of CP-violating new physics in t→bb¯c. They are (i) the partial-rate asymmetry and (ii) the triple-product correlations involving the momenta of various particles associated with the interaction. A Monte Carlo analysis is performed to determine how well these observables can be used to detect the presence of new physics, and to measure its parameters. We find that there is little difficulty in extracting the value of the relevant new-physics parameter from the partial-rate asymmetry. For the triple-product correlations, we test multiple strategies that can be used for the extraction of the corresponding combination of new-physics parameters.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Materia
Ciencias Exactas
Física
CP-violating
LHC
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/3.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/86970
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/86970
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network_name_str SEDICI (UNLP)
spelling Measuring CP-violating observables in rare top decays at the LHCSaha, PratishrutiKiers, KenBhattacharya, BhubanjyotiLondon, DavidSzynkman, Alejandro AndrésMelendez, JordanCiencias ExactasFísicaCP-violatingLHCIn this paper we consider CP-violating new-physics contributions to the decay t→bb¯c. We examine the prospects for detecting such new physics at the LHC, which requires studying the process gg→t(→bb¯c)t¯(→b¯ℓν¯). We find two observables that can be used to reveal the presence of CP-violating new physics in t→bb¯c. They are (i) the partial-rate asymmetry and (ii) the triple-product correlations involving the momenta of various particles associated with the interaction. A Monte Carlo analysis is performed to determine how well these observables can be used to detect the presence of new physics, and to measure its parameters. We find that there is little difficulty in extracting the value of the relevant new-physics parameter from the partial-rate asymmetry. For the triple-product correlations, we test multiple strategies that can be used for the extraction of the corresponding combination of new-physics parameters.Facultad de Ciencias ExactasInstituto de Física La Plata2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/86970enginfo:eu-repo/semantics/altIdentifier/issn/2470-0010info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.93.054044info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/Creative Commons Attribution 3.0 Unported (CC BY 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-10T12:19:28Zoai:sedici.unlp.edu.ar:10915/86970Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-10 12:19:28.728SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Measuring CP-violating observables in rare top decays at the LHC
title Measuring CP-violating observables in rare top decays at the LHC
spellingShingle Measuring CP-violating observables in rare top decays at the LHC
Saha, Pratishruti
Ciencias Exactas
Física
CP-violating
LHC
title_short Measuring CP-violating observables in rare top decays at the LHC
title_full Measuring CP-violating observables in rare top decays at the LHC
title_fullStr Measuring CP-violating observables in rare top decays at the LHC
title_full_unstemmed Measuring CP-violating observables in rare top decays at the LHC
title_sort Measuring CP-violating observables in rare top decays at the LHC
dc.creator.none.fl_str_mv Saha, Pratishruti
Kiers, Ken
Bhattacharya, Bhubanjyoti
London, David
Szynkman, Alejandro Andrés
Melendez, Jordan
author Saha, Pratishruti
author_facet Saha, Pratishruti
Kiers, Ken
Bhattacharya, Bhubanjyoti
London, David
Szynkman, Alejandro Andrés
Melendez, Jordan
author_role author
author2 Kiers, Ken
Bhattacharya, Bhubanjyoti
London, David
Szynkman, Alejandro Andrés
Melendez, Jordan
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
CP-violating
LHC
topic Ciencias Exactas
Física
CP-violating
LHC
dc.description.none.fl_txt_mv In this paper we consider CP-violating new-physics contributions to the decay t→bb¯c. We examine the prospects for detecting such new physics at the LHC, which requires studying the process gg→t(→bb¯c)t¯(→b¯ℓν¯). We find two observables that can be used to reveal the presence of CP-violating new physics in t→bb¯c. They are (i) the partial-rate asymmetry and (ii) the triple-product correlations involving the momenta of various particles associated with the interaction. A Monte Carlo analysis is performed to determine how well these observables can be used to detect the presence of new physics, and to measure its parameters. We find that there is little difficulty in extracting the value of the relevant new-physics parameter from the partial-rate asymmetry. For the triple-product correlations, we test multiple strategies that can be used for the extraction of the corresponding combination of new-physics parameters.
Facultad de Ciencias Exactas
Instituto de Física La Plata
description In this paper we consider CP-violating new-physics contributions to the decay t→bb¯c. We examine the prospects for detecting such new physics at the LHC, which requires studying the process gg→t(→bb¯c)t¯(→b¯ℓν¯). We find two observables that can be used to reveal the presence of CP-violating new physics in t→bb¯c. They are (i) the partial-rate asymmetry and (ii) the triple-product correlations involving the momenta of various particles associated with the interaction. A Monte Carlo analysis is performed to determine how well these observables can be used to detect the presence of new physics, and to measure its parameters. We find that there is little difficulty in extracting the value of the relevant new-physics parameter from the partial-rate asymmetry. For the triple-product correlations, we test multiple strategies that can be used for the extraction of the corresponding combination of new-physics parameters.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/86970
url http://sedici.unlp.edu.ar/handle/10915/86970
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2470-0010
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.93.054044
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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