collaborators

76 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.…

hep-ex2026

Amplitude analysis and branching fraction measurement of the decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +703

An amplitude analysis of the decay is performed to determine the relative magnitudes and phases of different intermediate processes. The analysis uses $e^…

hep-ex2026

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…

hep-ex2026

Search for the charged lepton flavor violating decay

M. Ablikim, M. N. Achasov, P. Adlarson +708

Based on events collected at the center-of-mass energy ~GeV with the BESIII detector, we search for the charged lepton fla…

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

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…