17 papers
Search for the decay
Belle, Belle II Collaborations, : +432
We present the first search for decays. We look for signal decays in events produced in asymmetric-energy electron-positron collisions.…
Searches for charged-lepton-flavor violation in decays
Belle, Belle II Collaborations, : +425
We report the first searches for charged-lepton-flavor violation in decays of ( and ) to a pair of charged leptons using 158 million decays collect…
First measurement of the masses of the and states and the energy dependence of the cross sections for and
Belle, Belle II Collaborations, : +398
We study the processes and at center-of-mass energies =(10.73 -- 11.02) GeV using a data sampl…
Development for the Belle II vertex detector upgrade with depleted monolithic active pixel sensors
Y. Onuki, M. Babeluk, T. Bergauer +85
The vertex detector upgrade project for the Belle II experiment, based on CMOS depleted monolithic active pixel sensor technology, is planned to be carried out in conjunction with…
Study of decays at Belle and Belle II
Belle, Belle II Collaborations, : +412
We report a measurement of the branching fraction for the leptonic decay . This work presents the first result using Belle~II data, an updated Be…
Charged-lepton identification at Belle~II
Belle II Collaboration, M. Abumusabh, I. Adachi +409
Effective particle identification capabilities are a strategic priority for the physics program of the Belle~II experiment. We describe the algorithms used at Belle~II for identify…