6 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.…
Search for axion-like particles decaying to two photons at Belle II
Belle II Collaboration, M. Abumusabh, I. Adachi +450
Axion-like particles (ALPs) are predicted in many extensions of the Standard Model and provide a well-motivated portal between visible and hidden sectors through their coupling to…
Observation of the radiative decay
Belle II Collaboration, M. Abumusabh, I. Adachi +367
We observe the radiative decay for the first time, with a significance exceeding standard deviations. The signal is found in the conti…
Improved measurement of Born cross sections for and ( = 0, 1, 2) at Belle and Belle II
Belle, Belle II Collaborations, : +424
We study the processes and ( = 0, 1, 2) at center-of-mass energies from 10.73 to 11.02 GeV using a $142.5\,\mathr…
Measurements of the absolute branching fractions of the hadronic decays
BESIII Collaboration, M. Ablikim, M. N. Achasov +722
Based on 4.5 fb of collision data collected at center-of-mass energies between 4599.53 MeV and 4698.82 MeV with the BESIII detector, the absolute branching fraction…
Measurement of asymmetries in decays at Belle II
Belle II Collaboration, I. Adachi, L. Aggarwal +399
We describe a measurement of charge-parity () violation asymmetries in decays using Belle II data. We consider and $η'\toÏ(\toÏ^…