Dispersive representation of the pion vector form factor in τ→ππν τ decays
- Autores
- Gomez Dumm, Daniel Alberto; Roig, P.
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We propose a dispersive representation of the charged pion vector form factor that is consistent with chiral symmetry and fulfills the constraints imposed by analyticity and unitarity. Unknown parameters are fitted to the very precise data on τ-→π- π0 ντ decays obtained by Belle, leading to a good description of the corresponding spectral function up to a ππ squared invariant mass s≃1.5 GeV2. We determine the ρ(770) mass and width pole parameters and obtain the values of low-energy observables. The significance of isospin-breaking corrections is also discussed. For larger values of s, this representation is complemented with a phenomenological description to allow its implementation in the new TAUOLA hadronic currents.
Fil: Gomez Dumm, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Física La Plata; Argentina
Fil: Roig, P.. Universitat Autònoma de Barcelona; España - Materia
-
Tau Lepton Decays
Chiral Symmetry
Vector Meson Physics - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/3412
Ver los metadatos del registro completo
id |
CONICETDig_167bd25036f01788192acbf00f167e9d |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/3412 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Dispersive representation of the pion vector form factor in τ→ππν τ decaysGomez Dumm, Daniel AlbertoRoig, P.Tau Lepton DecaysChiral SymmetryVector Meson Physicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We propose a dispersive representation of the charged pion vector form factor that is consistent with chiral symmetry and fulfills the constraints imposed by analyticity and unitarity. Unknown parameters are fitted to the very precise data on τ-→π- π0 ντ decays obtained by Belle, leading to a good description of the corresponding spectral function up to a ππ squared invariant mass s≃1.5 GeV2. We determine the ρ(770) mass and width pole parameters and obtain the values of low-energy observables. The significance of isospin-breaking corrections is also discussed. For larger values of s, this representation is complemented with a phenomenological description to allow its implementation in the new TAUOLA hadronic currents.Fil: Gomez Dumm, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Física La Plata; ArgentinaFil: Roig, P.. Universitat Autònoma de Barcelona; EspañaSpringer2013-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/3412Gomez Dumm, Daniel Alberto; Roig, P.; Dispersive representation of the pion vector form factor in τ→ππν τ decays; Springer; European Physical Journal C: Particles and Fields; 73; 8; 8-2013; 2528-25281434-6044enginfo:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-013-2528-1info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-013-2528-1info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1301.6973info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:53:32Zoai:ri.conicet.gov.ar:11336/3412instacron: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 11:53:32.745CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Dispersive representation of the pion vector form factor in τ→ππν τ decays |
title |
Dispersive representation of the pion vector form factor in τ→ππν τ decays |
spellingShingle |
Dispersive representation of the pion vector form factor in τ→ππν τ decays Gomez Dumm, Daniel Alberto Tau Lepton Decays Chiral Symmetry Vector Meson Physics |
title_short |
Dispersive representation of the pion vector form factor in τ→ππν τ decays |
title_full |
Dispersive representation of the pion vector form factor in τ→ππν τ decays |
title_fullStr |
Dispersive representation of the pion vector form factor in τ→ππν τ decays |
title_full_unstemmed |
Dispersive representation of the pion vector form factor in τ→ππν τ decays |
title_sort |
Dispersive representation of the pion vector form factor in τ→ππν τ decays |
dc.creator.none.fl_str_mv |
Gomez Dumm, Daniel Alberto Roig, P. |
author |
Gomez Dumm, Daniel Alberto |
author_facet |
Gomez Dumm, Daniel Alberto Roig, P. |
author_role |
author |
author2 |
Roig, P. |
author2_role |
author |
dc.subject.none.fl_str_mv |
Tau Lepton Decays Chiral Symmetry Vector Meson Physics |
topic |
Tau Lepton Decays Chiral Symmetry Vector Meson Physics |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We propose a dispersive representation of the charged pion vector form factor that is consistent with chiral symmetry and fulfills the constraints imposed by analyticity and unitarity. Unknown parameters are fitted to the very precise data on τ-→π- π0 ντ decays obtained by Belle, leading to a good description of the corresponding spectral function up to a ππ squared invariant mass s≃1.5 GeV2. We determine the ρ(770) mass and width pole parameters and obtain the values of low-energy observables. The significance of isospin-breaking corrections is also discussed. For larger values of s, this representation is complemented with a phenomenological description to allow its implementation in the new TAUOLA hadronic currents. Fil: Gomez Dumm, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Física La Plata; Argentina Fil: Roig, P.. Universitat Autònoma de Barcelona; España |
description |
We propose a dispersive representation of the charged pion vector form factor that is consistent with chiral symmetry and fulfills the constraints imposed by analyticity and unitarity. Unknown parameters are fitted to the very precise data on τ-→π- π0 ντ decays obtained by Belle, leading to a good description of the corresponding spectral function up to a ππ squared invariant mass s≃1.5 GeV2. We determine the ρ(770) mass and width pole parameters and obtain the values of low-energy observables. The significance of isospin-breaking corrections is also discussed. For larger values of s, this representation is complemented with a phenomenological description to allow its implementation in the new TAUOLA hadronic currents. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-08 |
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/11336/3412 Gomez Dumm, Daniel Alberto; Roig, P.; Dispersive representation of the pion vector form factor in τ→ππν τ decays; Springer; European Physical Journal C: Particles and Fields; 73; 8; 8-2013; 2528-2528 1434-6044 |
url |
http://hdl.handle.net/11336/3412 |
identifier_str_mv |
Gomez Dumm, Daniel Alberto; Roig, P.; Dispersive representation of the pion vector form factor in τ→ππν τ decays; Springer; European Physical Journal C: Particles and Fields; 73; 8; 8-2013; 2528-2528 1434-6044 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-013-2528-1 info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-013-2528-1 info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1301.6973 |
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 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 |
_version_ |
1846782231092133888 |
score |
12.982451 |