Speaker
Prof.
Daniel Gomez Dumm
(UNLP)
Description
Tau decays are analyzed within the framework of resonance chiral theory.
This is an extension of chiral perturbation theory in which resonances are
incorporated as dynamical states in the Lagrangian, making use of both
chiral symmetry and large N_C considerations. It is seen that after
imposing asymptotic QCD constraints, a few effective coupling constants
need to be fitted from experiment in order to describe the spectral
functions for various decay channels.
Primary author
Prof.
Daniel Gomez Dumm
(UNLP)
Co-authors
Prof.
Jorge Portoles
(Instituto de Fisica Corpuscular)
Prof.
Pablo Roig
(IFAE)
