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hep-ex2024

Observation of and measurement of the effective couplings of to and

Belle Collaboration, S. Jia, C. P. Shen +117

Using , , and data collected by the Belle detector, we discover a new three-body decay, , with a significance of…

hep-ex2024

Search for lepton flavor-violating decay modes with hadronic -tagging at Belle and Belle II

Belle, Belle II Collaborations, : +425

We present the first search for the lepton flavor-violating decay modes using the 711 fb and 365 fb data samples…

hep-ex2024

Test of light-lepton universality in decays with the Belle II experiment

Belle II Collaboration, I. Adachi, K. Adamczyk +428

We present a measurement of the ratio of branching fractions of the lepto…

hep-ex2024

Search for the decay using Belle and Belle II data

Belle, Belle II Collaborations, : +407

We report the result of a search for the rare decay using a combined dataset of pairs collected by the Belle experiment and $387\times…

hep-ex2024

Determination of from simultaneous measurements of untagged and decays

Belle II Collaboration, I. Adachi, L. Aggarwal +417

We present a measurement of from a simultaneous study of the charmless semileptonic decays and , where $\ell =…

hep-ex2024

Search for Two-Body Meson Decays to and

Belle Collaboration, V. Savinov, I. Adachi +146

We report the results of the first search for Standard Model and baryon-number-violating two-body decays of the neutral mesons to and using 711~${\rm fb^…