000003721 001__ 3721
000003721 005__ 20230707212524.0
000003721 037__ $$aBELLE2-TALK-CONF-2023-094
000003721 041__ $$aeng
000003721 088__ $$aBELLE2-TALK-DRAFT-2023-067
000003721 100__ $$aGeraldine Raeuber
000003721 245__ $$aRecent tau and dark-sector results at Belle II
000003721 260__ $$aFPCP2023$$c2023-06-29
000003721 300__ $$amult. p
000003721 520__ $$aBelle has unique sensitivity to a broad class of models that postulate the existence of dark matter particles with MeV—GeV masses. In addition, the low-background environment of electron-positron collisions along with the large expected sample size and an hermetic detector make Belle II the premier experiment for studying tau-lepton physics. This talk presents recent world-leading physics results from Belle II searches for dark Z’ decays; as well as for long-lived (pseudo) scalars in B decays. Results from Belle II determinations of the tau lepton mass and from searches lepton-flavor-violating τ decays to a lepton and an invisible boson are presented.
000003721 8560_ $$fdjaffe@bnl.gov
000003721 8564_ $$uhttps://docs.belle2.org/record/3721/files/BELLE2-TALK-CONF-2023-094.pdf