Resonance Effective Theory Approach to {tau} {yields} 3{pi}{nu}{tau} Decays

Journal Article · Thu Dec 02 00:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1843685· OSTI ID:20630421

Gomez Dumm, D ^[1]; Pich, A; Portoles, J ^[2]

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1. IFLP, Depto. de Fisica, Univ. Nac. de La Plata, C.C. 67 (1900) La Plata (Argentina)
2. Dept. Fisica Teorica, IFIC, CSIC-Univ. de Valencia, Apt. 22085, E-46071 Valencia (Spain)

The decays {tau} {yields} 3{pi}{nu}{tau} are analyzed in the framework of the resonance effective theory of QCD, We derive the effective chiral Lagrangian relevant for the evaluation of the hadronic axial-vector current, taking into account the constraints imposed by QCD on the high energy asymptotic behaviour. Then we fit the unknown parameters to the spectral function and branching ratio measured by ALEPH, showing that the theory is in good agreement with experimental data. A detailed description of the work sketched here can be found.

• OSTI ID: 20630421
• Journal Information: AIP Conference Proceedings, Vol. 739, Issue 1; Conference: Joint meeting on QCD and QCP: 9. hadron physics and 7. relativistic aspects of nuclear physics, Rio de Janeiro (Brazil), 28 Mar - 3 Apr 2004; Other Information: DOI: 10.1063/1.1843685; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AXIAL-VECTOR CURRENTS
BRANCHING RATIO
CHIRALITY
EVALUATION
HADRONS
LAGRANGIAN FUNCTION
PARTICLE DECAY
PARTICLE PRODUCTION
QUANTUM CHROMODYNAMICS
RESONANCE
SPECTRAL FUNCTIONS
TAU PARTICLES