Speaker
Dr
Olga Shekhovtsova
(Institute of Nuclear Physics)
Description
We analyze the contribution from intermediate spin–0 and spin–2 resonances to the $\tau\rightarrow 3\pi \nu_\tau$ decay by means of a chiral invariant Lagrangian incorporating these mesons. In particular, we study the corresponding axial-vector form-factors. The
advantage of this procedure with respect to previous analyses is that it incorporates chiral (and isospin) invariance and, hence, the partial conservation of the axial-vector current. This ensures the recovery of the right low-energy limit, described by chiral perturbation theory, and the transversality of the current in the chiral limit at all energies.
Primary author
Dr
Olga Shekhovtsova
(Institute of Nuclear Physics)
Co-author
Juan Jose Sanz Cillero
(UCM)
