26–29 Jun 2017
Schloss Waldthausen
Europe/Berlin timezone

Study of $\tau\rightarrow 3\pi \nu_\tau$ within extended RChT including tensor and scalar resonances

27 Jun 2017, 18:30
1h 30m
Helmholtz-Institut Mainz

Helmholtz-Institut Mainz

Staudingerweg 18, 55128 Mainz
Board: 17

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

Presentation materials