activity
20242026
collaborators

31 papers

hep-ex2026

Observation of the decays and

Belle, Belle II Collaborations, : +403

We report the first observation of the decays and , with significances of $6.4\,…

hep-ex2026

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…

hep-ex2026

Search for ( = 0, 1, 2) near GeV at Belle II

Belle II Collaboration, M. Abumusabh, I. Adachi +399

We search for the ( = 0, 1, 2) processes at center-of-mass energies = 10.653, 10.701, 10.746, and 10.804 GeV. These data were collected with t…

hep-ex2026

Measurement of inclusive partial branching fractions and at Belle II

Belle II Collaboration, M. Abumusabh, I. Adachi +419

A sample of 365 fb of data collected by the Belle II experiment is used to measure the partial branching fractions of charmless semileptonic…

hep-ex2026

Test of lepton flavor universality with measurements of and using semileptonic tagging at the Belle II experiment

Belle II Collaboration, I. Adachi, K. Adamczyk +450

We report measurements of the ratios of branching fractions ${\cal R}(D^{(*)+}) = \frac{{\cal B}(\overline{B}{}^0 \to D^{(*)+} \,τ^- \, \overlineν_τ)}{{\cal B}(\overline{B}{}^0…

hep-ex2026

First measurements of the branching fractions for the decay modes and and search for the decay using Belle and Belle II data

Belle, Belle II Collaborations, : +321

Using data samples of 988.4 fb and 427.9 fb collected with the Belle and Belle II detectors, we present a study of the singly Cabibbo-suppressed decays $Ξ_c^{0} \to…