Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays

Autores
Mileo, Nicolás Ismael; Kiers, Ken; Szynkman, Alejandro Andrés
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We define and test CP-even and CP-odd partial differential widths for the process τ→Kππντ assuming that an intermediate heavy charged scalar contributes to the decay amplitude. Adopting a model-independent approach, we use a Monte Carlo simulation in order to study the number of events needed to recover information on the new physics from these observables. Our analysis of the CP-odd observables indicates that the magnitude of fHηP, which is related to the new-physics contribution, can be recovered with an uncertainty smaller than 3% for 3×106 events. This number of events would also allow one to retrieve certain parameters appearing in the Standard Model amplitude at the percent level. In addition, we discuss the possibility of using the proposed observables to study specific models involving two Higgs doublets, such as the aligned two-Higgs-doublet model. This analysis is undertaken within the context of the upcoming super B-factories, which are expected to provide a considerably larger number of events than that which was supplied by the B-factories. Moreover, a similar set of observables could be employed to study other decay modes such as τ→πππντ, τ→KKπντ and τ→KKKντ.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Materia
Ciencias Exactas
Física
decay amplitude
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/86874

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network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decaysMileo, Nicolás IsmaelKiers, KenSzynkman, Alejandro AndrésCiencias ExactasFísicadecay amplitudeWe define and test CP-even and CP-odd partial differential widths for the process τ→Kππν<sub>τ</sub> assuming that an intermediate heavy charged scalar contributes to the decay amplitude. Adopting a model-independent approach, we use a Monte Carlo simulation in order to study the number of events needed to recover information on the new physics from these observables. Our analysis of the CP-odd observables indicates that the magnitude of f<sub>H</sub>η<sub>P</sub>, which is related to the new-physics contribution, can be recovered with an uncertainty smaller than 3% for 3×10<sup>6</sup> events. This number of events would also allow one to retrieve certain parameters appearing in the Standard Model amplitude at the percent level. In addition, we discuss the possibility of using the proposed observables to study specific models involving two Higgs doublets, such as the aligned two-Higgs-doublet model. This analysis is undertaken within the context of the upcoming super B-factories, which are expected to provide a considerably larger number of events than that which was supplied by the B-factories. Moreover, a similar set of observables could be employed to study other decay modes such as τ→πππν<sub>τ</sub>, τ→KKπν<sub>τ</sub> and τ→KKKν<sub>τ</sub>.Facultad de Ciencias ExactasInstituto de Física La Plata2015info: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/10915/86874enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.91.073006info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:55Zoai:sedici.unlp.edu.ar:10915/86874Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:55.528SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays
title Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays
spellingShingle Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays
Mileo, Nicolás Ismael
Ciencias Exactas
Física
decay amplitude
title_short Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays
title_full Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays
title_fullStr Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays
title_full_unstemmed Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays
title_sort Probing sensitivity to charged scalars through partial differential widths: τ →Kππν<sub>τ</sub> decays
dc.creator.none.fl_str_mv Mileo, Nicolás Ismael
Kiers, Ken
Szynkman, Alejandro Andrés
author Mileo, Nicolás Ismael
author_facet Mileo, Nicolás Ismael
Kiers, Ken
Szynkman, Alejandro Andrés
author_role author
author2 Kiers, Ken
Szynkman, Alejandro Andrés
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
decay amplitude
topic Ciencias Exactas
Física
decay amplitude
dc.description.none.fl_txt_mv We define and test CP-even and CP-odd partial differential widths for the process τ→Kππν<sub>τ</sub> assuming that an intermediate heavy charged scalar contributes to the decay amplitude. Adopting a model-independent approach, we use a Monte Carlo simulation in order to study the number of events needed to recover information on the new physics from these observables. Our analysis of the CP-odd observables indicates that the magnitude of f<sub>H</sub>η<sub>P</sub>, which is related to the new-physics contribution, can be recovered with an uncertainty smaller than 3% for 3×10<sup>6</sup> events. This number of events would also allow one to retrieve certain parameters appearing in the Standard Model amplitude at the percent level. In addition, we discuss the possibility of using the proposed observables to study specific models involving two Higgs doublets, such as the aligned two-Higgs-doublet model. This analysis is undertaken within the context of the upcoming super B-factories, which are expected to provide a considerably larger number of events than that which was supplied by the B-factories. Moreover, a similar set of observables could be employed to study other decay modes such as τ→πππν<sub>τ</sub>, τ→KKπν<sub>τ</sub> and τ→KKKν<sub>τ</sub>.
Facultad de Ciencias Exactas
Instituto de Física La Plata
description We define and test CP-even and CP-odd partial differential widths for the process τ→Kππν<sub>τ</sub> assuming that an intermediate heavy charged scalar contributes to the decay amplitude. Adopting a model-independent approach, we use a Monte Carlo simulation in order to study the number of events needed to recover information on the new physics from these observables. Our analysis of the CP-odd observables indicates that the magnitude of f<sub>H</sub>η<sub>P</sub>, which is related to the new-physics contribution, can be recovered with an uncertainty smaller than 3% for 3×10<sup>6</sup> events. This number of events would also allow one to retrieve certain parameters appearing in the Standard Model amplitude at the percent level. In addition, we discuss the possibility of using the proposed observables to study specific models involving two Higgs doublets, such as the aligned two-Higgs-doublet model. This analysis is undertaken within the context of the upcoming super B-factories, which are expected to provide a considerably larger number of events than that which was supplied by the B-factories. Moreover, a similar set of observables could be employed to study other decay modes such as τ→πππν<sub>τ</sub>, τ→KKπν<sub>τ</sub> and τ→KKKν<sub>τ</sub>.
publishDate 2015
dc.date.none.fl_str_mv 2015
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/10915/86874
url http://sedici.unlp.edu.ar/handle/10915/86874
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1550-7998
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.91.073006
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
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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