4 papers
hep-ex2026
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. T…
hep-ex2026
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 sample, in…
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 samples c…
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 10^6…