Jun 26 – 29, 2017
Schloss Waldthausen
Europe/Berlin timezone

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

Jun 27, 2017, 6:30 PM
1h 30m
Helmholtz-Institut Mainz

Helmholtz-Institut Mainz

Staudingerweg 18, 55128 Mainz
Board: 17


Dr Olga Shekhovtsova (Institute of Nuclear Physics)


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)


Presentation materials