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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/129864
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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:UNLP2025-09-29T11:31:13Zoai: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:13292025-09-29 11:31:13.924SEDICI (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 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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