τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited
- Autores
- Gómez Dumm, Daniel Alberto; Roig, Pablo; Pich, Antonio; Portolés, Jorge
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The τ → π π π ν τ decay is driven by the hadronization of the axial-vector current. Within the resonance chiral theory, and considering the large- N C expansion, this process has been studied in Ref. [1] (D. Gomez Dumm, A. Pich, J. Portoles, 2004). In the light of later developments we revise here this previous work by including a new off-shell width for the lightest a1 resonance that provides a good description of the τ → π π π ν τ spectrum and branching ratio. We also consider the role of the ρ ( 1450 ) resonance in these observables. Thus we bring in an overall description of the τ → π π π ν τ process in excellent agreement with our present experimental knowledge.
Instituto de Física La Plata - Materia
-
Física
Hadron tau decays
Chiral Lagrangians
QCD
1/N expansion - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/130638
Ver los metadatos del registro completo
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τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisitedGómez Dumm, Daniel AlbertoRoig, PabloPich, AntonioPortolés, JorgeFísicaHadron tau decaysChiral LagrangiansQCD1/N expansionThe τ → π π π ν τ decay is driven by the hadronization of the axial-vector current. Within the resonance chiral theory, and considering the large- N C expansion, this process has been studied in Ref. [1] (D. Gomez Dumm, A. Pich, J. Portoles, 2004). In the light of later developments we revise here this previous work by including a new off-shell width for the lightest a1 resonance that provides a good description of the τ → π π π ν τ spectrum and branching ratio. We also consider the role of the ρ ( 1450 ) resonance in these observables. Thus we bring in an overall description of the τ → π π π ν τ process in excellent agreement with our present experimental knowledge.Instituto de Física La Plata2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf158-164http://sedici.unlp.edu.ar/handle/10915/130638enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/arxiv/0911.4436info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2010.01.059info: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:UNLP2025-10-15T11:23:09Zoai:sedici.unlp.edu.ar:10915/130638Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:23:09.852SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited |
| title |
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited |
| spellingShingle |
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited Gómez Dumm, Daniel Alberto Física Hadron tau decays Chiral Lagrangians QCD 1/N expansion |
| title_short |
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited |
| title_full |
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited |
| title_fullStr |
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited |
| title_full_unstemmed |
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited |
| title_sort |
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited |
| dc.creator.none.fl_str_mv |
Gómez Dumm, Daniel Alberto Roig, Pablo Pich, Antonio Portolés, Jorge |
| author |
Gómez Dumm, Daniel Alberto |
| author_facet |
Gómez Dumm, Daniel Alberto Roig, Pablo Pich, Antonio Portolés, Jorge |
| author_role |
author |
| author2 |
Roig, Pablo Pich, Antonio Portolés, Jorge |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
Física Hadron tau decays Chiral Lagrangians QCD 1/N expansion |
| topic |
Física Hadron tau decays Chiral Lagrangians QCD 1/N expansion |
| dc.description.none.fl_txt_mv |
The τ → π π π ν τ decay is driven by the hadronization of the axial-vector current. Within the resonance chiral theory, and considering the large- N C expansion, this process has been studied in Ref. [1] (D. Gomez Dumm, A. Pich, J. Portoles, 2004). In the light of later developments we revise here this previous work by including a new off-shell width for the lightest a1 resonance that provides a good description of the τ → π π π ν τ spectrum and branching ratio. We also consider the role of the ρ ( 1450 ) resonance in these observables. Thus we bring in an overall description of the τ → π π π ν τ process in excellent agreement with our present experimental knowledge. Instituto de Física La Plata |
| description |
The τ → π π π ν τ decay is driven by the hadronization of the axial-vector current. Within the resonance chiral theory, and considering the large- N C expansion, this process has been studied in Ref. [1] (D. Gomez Dumm, A. Pich, J. Portoles, 2004). In the light of later developments we revise here this previous work by including a new off-shell width for the lightest a1 resonance that provides a good description of the τ → π π π ν τ spectrum and branching ratio. We also consider the role of the ρ ( 1450 ) resonance in these observables. Thus we bring in an overall description of the τ → π π π ν τ process in excellent agreement with our present experimental knowledge. |
| publishDate |
2010 |
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2010 |
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http://sedici.unlp.edu.ar/handle/10915/130638 |
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eng |
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eng |
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