collaborators

5 papers

hep-ex2026

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…

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

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…

nucl-ex2026

First measurement of meson production in 30 GeV proton-nucleus reactions via di-electron decay at J-PARC

PARC E16 collaboration, Satomi Nakasuga, Yuhei Morino +44

We present the first measurement of the production of the meson in 30 GeV proton-nucleus interactions on carbon and copper targets via the di-electron decay channel. The measu…

hep-ex2026

A search for feebly-interacting particles in decays with missing energy at Belle

Belle, Belle II Collaborations, : +406

We present a search for an invisible hidden-sector particle , produced in and decays, where ,…