000002079 001__ 2079
000002079 005__ 20200804144944.0
000002079 037__ $$aBELLE2-TALK-CONF-2020-051
000002079 041__ $$aeng
000002079 088__ $$aBELLE2-TALK-DRAFT-2020-032
000002079 100__ $$aCyrille Praz
000002079 245__ $$aB lifetimes at Belle II
000002079 260__ $$a40th International Conference on High Energy Physics$$c2020-07-28
000002079 300__ $$amult. p
000002079 520__ $$aThe Belle II detector was completed with the installation of a silicon vertex detector that covers most of the solid angle around the interaction region. In 2019 Physics Run before summer shutdown, 5.15 /fb of data were collected at a center of mass energy corresponding to the mass of the Y(4S). We utilize this dataset to characterize the performance of the detector about tracking of charged particles, reconstruction of known resonances, and capability of identifying displaced decay vertices. In order to assess the B Physics capabilities of the experiment, one of the first benchmarks to be reached consists in the measurement of the lifetime of B mesons and of the B0-B0bar mixing frequency. We present the first results, based on samples of B mesons that decay to hadronic and semi-leptonic final states.
000002079 8560_ $$fdavid.jaffe@desy.de
000002079 8564_ $$uhttps://docs.belle2.org/record/2079/files/BELLE2-TALK-CONF-2020-051.pdf