000003613 001__ 3613
000003613 005__ 20230525203540.0
000003613 037__ $$aBELLE2-TALK-CONF-2023-063
000003613 041__ $$aeng
000003613 088__ $$aBELLE2-TALK-DRAFT-2023-054
000003613 100__ $$aZuzana Gruberova
000003613 245__ $$aRecent tau and dark-sector results at Belle II
000003613 260__ $$a34th Rencontres de Blois 2023 - Particle Physics and Cosmology$$c2023-05-14
000003613 300__ $$amult. p
000003613 520__ $$aBelle has unique sensitivity to a broad class of models that postulate the existence of dark matter particles with MeV—GeV masses. In addition, the low-background environment of electron-positron collisions along with the large expected sample size and an hermetic detector make Belle II the premier experiment for studying tau-lepton physics. This talk presents recent world-leading physics results from Belle II searches for dark Z’ decays; as well as for long-lived (pseudo) scalars in B decays. Results from Belle II determinations of the tau lepton mass and from searches for tau decays into a scalar non-SM particle and a lepton are also presented.
000003613 8560_ $$fdjaffe@bnl.gov
000003613 8564_ $$uhttps://docs.belle2.org/record/3613/files/BELLE2-TALK-CONF-2023-063.pdf