τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited

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 t...

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Detalles Bibliográficos
Autores principales: Gómez Dumm, Daniel Alberto, Roig, Pablo, Pich, Antonio, Portolés, Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Física
Hadron tau decays
Chiral Lagrangians
QCD
1/N expansion
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130638
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130638
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Hadron tau decays
Chiral Lagrangians
QCD
1/N expansion
spellingShingle Física
Hadron tau decays
Chiral Lagrangians
QCD
1/N expansion
Gómez Dumm, Daniel Alberto
Roig, Pablo
Pich, Antonio
Portolés, Jorge
τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited
topic_facet Física
Hadron tau decays
Chiral Lagrangians
QCD
1/N expansion
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.
format Articulo
Articulo
author Gómez Dumm, Daniel Alberto
Roig, Pablo
Pich, Antonio
Portolés, Jorge
author_facet Gómez Dumm, Daniel Alberto
Roig, Pablo
Pich, Antonio
Portolés, Jorge
author_sort Gómez Dumm, Daniel Alberto
title τ → π π π ν<SUB>τ</SUB> decays and the a<SUB>1</SUB>(1260) off-shell width revisited
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
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/130638
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AT roigpablo tpppnsubtsubdecaysandtheasub1sub1260offshellwidthrevisited
AT pichantonio tpppnsubtsubdecaysandtheasub1sub1260offshellwidthrevisited
AT portolesjorge tpppnsubtsubdecaysandtheasub1sub1260offshellwidthrevisited
bdutipo_str Repositorios
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