activity
20242026
collaborators

15 papers

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

A search for feebly-interacting particles in decays with missing energy at Belle

Belle, Belle II Collaborations, : +406

We present a search for an invisible hidden-sector particle , produced in and decays, where ,…

hep-ex2025

Measurement of asymmetries in decays at Belle II

Belle II Collaboration, I. Adachi, L. Aggarwal +436

We report measurements of time-dependent asymmetries in decays based on a data sample of events collected at the $Î¥(4…

hep-ex2025

Measurement of the time-integrated CP asymmetry in decays using Belle and Belle II data

Belle, Belle II Collaborations, : +360

We measure the time-integrated CP asymmetry in decays reconstructed in events collected by the Belle a…

hep-ex2025

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle

I. Adachi, L. Aggarwal, H. Ahmed +402

Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy collider, we search f…

hep-ex2025

Model-independent measurement of - mixing parameters in decays at Belle and Belle II

Belle, Belle II Collaborations, : +339

We perform a model-independent measurement of the - mixing parameters using samples of -collision data collected by the Belle and Belle II experiment…