000004165 001__ 4165
000004165 005__ 20240311040745.0
000004165 037__ $$aBELLE2-TALK-CONF-2024-034
000004165 041__ $$aeng
000004165 088__ $$aBELLE2-TALK-DRAFT-2024-011
000004165 100__ $$aStefan Wallner
000004165 245__ $$aTau and low multiplicity decays at Belle and Belle II
000004165 260__ $$aLake Louise Winter Institute 2024$$c2024-02-18
000004165 300__ $$amult. p
000004165 520__ $$aBelle and its successor, the Belle II experiment at the KEK accelerator facility in Japan, measured large data sets of tau pair production. By applying innovative analysis techniques, we have obtained world-leading results from these data for precision measurements of the tau and Standard Model parameters, and for the search for physics beyond the Standard Model. In addition, special triggers designed to record events with low track multiplicity allow us to perform dart sector searches with unprecedented precision. In this talk we will report on the precision measurement of the tau mass and the partial wave decomposition in $\tau^-\to\pi^-\pi^-\pi^+\nu_\tau$ decays, the search for lepton flavor violation in tau decays, and the search for a dark $Z` in different final states.
000004165 8560_ $$fdjaffe@bnl.gov
000004165 8564_ $$uhttps://docs.belle2.org/record/4165/files/BELLE2-TALK-CONF-2024-034.pdf