Speaker
Andrei Rabusov
(Technical University of Munich)
Description
I present preliminary results of a partial-wave analysis of $\tau^-\to\pi^-\pi^-\pi^+\nu_\tau$ in data from the Belle experiment at the KEK $\mathrm{e}^+\mathrm{e}^-$ collider. I demonstrate the presence of the $\mathrm{a}_1(1420)$ and $\mathrm{a}_1(1640)$ resonances in $\tau$ decay and measure their parameters. I also present validation of our findings using a model-independent approach. These results can improve modeling in simulation studies necessary for measuring the $\tau$ electric and magnetic dipole moments and Michel parameters.
Primary author
Andrei Rabusov
(Technical University of Munich)
