July 28, 2020 to August 6, 2020
virtual conference
Europe/Prague timezone

B lifetimes at Belle II

Jul 30, 2020, 1:10 PM
virtual conference

virtual conference

Talk 12. Operation, Performance and Upgrade of Present Detectors Operation, Performance and Upgrade of Present Detectors


Cyrille Praz (Deutsches Elektronen-Synchrotron DESY)


The 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.

Secondary track (number) 05

Primary author

Cyrille Praz (Deutsches Elektronen-Synchrotron DESY)

Presentation materials