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Title: Hadronic decays of the tau lepton : {tau}- {yields} ({pi}{pi}{pi})- {nu}{tau} within Resonance Chiral Theory

{tau} decays into hadrons foresee the study of the hadronization of vector and axial-vector QCD currents, yielding relevant information on the dynamics of the resonances entering into the processes. We analyse {tau} {yields} {pi}{pi}{pi}{nu}{tau} decays within the framework of the Resonance Chiral Theory, comparing this theoretical scheme with the experimental data, namely ALEPH spectral function and branching ratio. Hence we get values for the mass and on-shell width of the a 1 (1260) resonance, and provide the structure functions that have been measured by OPAL and CLEO-II.
Authors:
 [1] ; ;  [2]
  1. IFLP, CONICET - Depto. de Fisica, Univ. Nac. de la Plata, C.C. 67, 1900 La Plata (Argentina)
  2. Instituto de Fisica Corpuscular, IFIC, CSIC-Universitat de Valencia, Edifici d'Instituts de Paterna, Apt. Correus 22085, E-46071 Valencia (Spain)
Publication Date:
OSTI Identifier:
20787626
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 806; Journal Issue: 1; Conference: International workshop on quantum chromodynamics: Theory and experiment, Conversano, Bari (Italy), 16-20 Jun 2005; Other Information: DOI: 10.1063/1.2163740; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AXIAL-VECTOR CURRENTS; BRANCHING RATIO; CESR STORAGE RING; CHIRAL SYMMETRY; CHIRALITY; HADRONIC PARTICLE DECAY; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PARTICLE PRODUCTION; PARTICLE WIDTHS; PIONS; QUANTUM CHROMODYNAMICS; RESONANCE PARTICLES; SPECTRAL FUNCTIONS; STRUCTURE FUNCTIONS; TAU NEUTRINOS; TAU PARTICLES; VECTOR CURRENTS