Tau-lepton dynamics is much less explored than quark dynamics and thus offers among the most promising probes for indirect searches for non-Standard-Model physics. Currently, the largest samples of tau-lepton decays have been collected with the Belle detector at the KEKB electron-positron collider at KEK, Japan. After a brief overview of the Belle tau-lepton program, I focus on the recent measurement of the ?- ? "- ?+ ?- ? branching fraction. Finally, I discuss tau-lepton opportunities at Belle II.
Speaker: Dr. Yifan Jin (CNRS Strasbourg)
Tuesday, April 2, 2.30pm – Aula D, Dipartimento di Fisica