activity
20242026
collaborators

24 papers

hep-ex2026

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…

hep-ex2026

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…

hep-ex2026

Study of via initial-state radiation at Belle~II

Belle II Collaboration, M. Abumusabh, I. Adachi +417

Using a data sample of 427.9 fb collected by the Belle~II detector at or near the and resonances, the cross sections for $(h=π/K…

hep-ex2026

First evidence of and search for

Belle, Belle II Collaborations, : +412

We search for the pionic transitions and in decays using the Belle and Belle~II data sam…

hep-ex2026

Measurement of mixing-induced CP violation in the decay

Belle II Collaboration, M. Abumusabh, I. Adachi +437

Measurements of charge-parity (CP) violation in quark transitions provide stringent tests of the current theory and sensitive probes of particles or interactions beyond it. We repo…

hep-ex2026

Measurement of time-dependent violation parameters in decays at Belle and Belle II

Belle, Belle II Collaborations, : +416

We perform a measurement of time-dependent violation parameters in decays using a dataset of approximately and $521 \times 10…