Dispersive analysis of τ− → π−π⁰ντ Belle data

Autores
Gómez Dumm, Daniel Alberto; Roig, Pablo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We analyse Belle data on the decay τ− → π−π⁰ντ using a dispersive representation of the vector form factor which is consistent with chiral symmetry and preserves analyticity and unitarity exactly. We fit the unknown theoretical parameters from the data, determining the values of the related low-energy observables 〈 r² 〉πV and cπV. The implementation of isospin breaking effects is also discussed.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Materia
Ciencias Exactas
Física
Tau decays
dispersion relations
chiral Lagrangian
hadronic form factors
meson resonances
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/129864
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/129864
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Dispersive analysis of τ− → π−π⁰ντ Belle dataGómez Dumm, Daniel AlbertoRoig, PabloCiencias ExactasFísicaTau decaysdispersion relationschiral Lagrangianhadronic form factorsmeson resonancesWe analyse Belle data on the decay τ− → π−π⁰ν<sub>τ</sub> using a dispersive representation of the vector form factor which is consistent with chiral symmetry and preserves analyticity and unitarity exactly. We fit the unknown theoretical parameters from the data, determining the values of the related low-energy observables 〈 r² 〉<sup>π</sup><sub>V</sub> and c<sup>π</sup><sub>V</sub>. The implementation of isospin breaking effects is also discussed.Facultad de Ciencias ExactasInstituto de Física La Plata2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf69-72http://sedici.unlp.edu.ar/handle/10915/129864enginfo:eu-repo/semantics/altIdentifier/issn/0920-5632info:eu-repo/semantics/altIdentifier/arxiv/1301.7167info:eu-repo/semantics/altIdentifier/doi/10.1016/j.nuclphysbps.2014.09.017info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:12:11Zoai:sedici.unlp.edu.ar:10915/129864Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:12:11.688SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Dispersive analysis of τ− → π−π⁰ντ Belle data
title Dispersive analysis of τ− → π−π⁰ντ Belle data
spellingShingle Dispersive analysis of τ− → π−π⁰ντ Belle data
Gómez Dumm, Daniel Alberto
Ciencias Exactas
Física
Tau decays
dispersion relations
chiral Lagrangian
hadronic form factors
meson resonances
title_short Dispersive analysis of τ− → π−π⁰ντ Belle data
title_full Dispersive analysis of τ− → π−π⁰ντ Belle data
title_fullStr Dispersive analysis of τ− → π−π⁰ντ Belle data
title_full_unstemmed Dispersive analysis of τ− → π−π⁰ντ Belle data
title_sort Dispersive analysis of τ− → π−π⁰ντ Belle data
dc.creator.none.fl_str_mv Gómez Dumm, Daniel Alberto
Roig, Pablo
author Gómez Dumm, Daniel Alberto
author_facet Gómez Dumm, Daniel Alberto
Roig, Pablo
author_role author
author2 Roig, Pablo
author2_role author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
Tau decays
dispersion relations
chiral Lagrangian
hadronic form factors
meson resonances
topic Ciencias Exactas
Física
Tau decays
dispersion relations
chiral Lagrangian
hadronic form factors
meson resonances
dc.description.none.fl_txt_mv We analyse Belle data on the decay τ− → π−π⁰ν<sub>τ</sub> using a dispersive representation of the vector form factor which is consistent with chiral symmetry and preserves analyticity and unitarity exactly. We fit the unknown theoretical parameters from the data, determining the values of the related low-energy observables 〈 r² 〉<sup>π</sup><sub>V</sub> and c<sup>π</sup><sub>V</sub>. The implementation of isospin breaking effects is also discussed.
Facultad de Ciencias Exactas
Instituto de Física La Plata
description We analyse Belle data on the decay τ− → π−π⁰ν<sub>τ</sub> using a dispersive representation of the vector form factor which is consistent with chiral symmetry and preserves analyticity and unitarity exactly. We fit the unknown theoretical parameters from the data, determining the values of the related low-energy observables 〈 r² 〉<sup>π</sup><sub>V</sub> and c<sup>π</sup><sub>V</sub>. The implementation of isospin breaking effects is also discussed.
publishDate 2014
dc.date.none.fl_str_mv 2014
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/10915/129864
url http://sedici.unlp.edu.ar/handle/10915/129864
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0920-5632
info:eu-repo/semantics/altIdentifier/arxiv/1301.7167
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.nuclphysbps.2014.09.017
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
69-72
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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score 12.982451

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