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

Trigger efficiency measurement using e+e- → τ+τ- events at Belle II

Jul 29, 2020, 7:40 PM
virtual conference

virtual conference

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


Petar Kevin Rados (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 present the measurement of the L1 and high-level trigger efficiencies at Belle II
using the τ-pair events. The 1x3, 3x3, 1x5 and 1x1 τ-pair decay modes are considered.
These measurements were performed using the e+e collision data recorded by Belle II
during the early Phase III of data taking.

Presentation materials