Speaker
Yoshihito IWASAKI
(KEK)
Description
The Belle-II Level-1 trigger has been designed and constructed to select physics events of our interests for the Belle-II experiment at the asymmetric-energy electron-positron collider SuperKEKB. Our main physics target is a B-meson
pair produced via Upsilon 4S, but also continuum event and a tau pair are important. To select those events with high efficiency, we use signals from the central drift chamber and the electromagnetic calorimeter. We describe our Level-1 trigger system and its performance during the operation of SuperKEKB in 2019.
Primary author
Yoshihito IWASAKI
(KEK)
