Thursday, September 30, 2021, 16:00
online only
(for the zoom link contact michael.spira@psi.ch, johannes.schlenk@psi.ch or
antonio.coutinho@psi.ch)
Doug Bryman, University of British Columbia and TRIUMF
Abstract:
Since the discovery of the muon, the lack of understanding of particle
flavors or generations is one of the most intriguing and persistent
problems in particle physics. Many hypotheses which extend the Standard
Model suggest that non-universal interactions could occur and be due to
effects at high mass scales, possibly exceeding 1000 TeV. Sensitive and
precise experiments have been performed seeking effects which might
provide clues to understanding why there are exactly three replicas of
each type of fundamental particle. Some hints of anomalous effects have
been reported in third generation studies and in CKM unitarity.
Experiments probing the validity of universality in decays of first and
second generation particles, including ideas for new experiments on rare
pion decays π → eν and pion beta decay will be discussed.