28 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…
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…
First search for decays
Belle II Collaboration, M. Abumusabh, I. Adachi +440
We report the first search for the flavor-changing neutral-current decays , where is a hadronic system with strangeness equal to 1, in data co…
Observation of the decays and
Belle, Belle II Collaborations, : +403
We report the first observation of the decays and , with significances of $6.4\,…
Search for the lepton-flavor-violating decays at Belle II
Belle II Collaboration, I. Adachi, L. Aggarwal +447
We present the result of a search for the charged-lepton-flavor violating decays , where is a muon or an electron, using a data sampl…