I. Ueda

collaborators

6 papers

hep-ex2026

Study of $B^{+} \to I^¼^{+} I^½_{I^} ¼$ decays at Belle and Belle II

Belle, Belle II Collaborations, : +412

We report a measurement of the branching fraction for the leptonic decay $B^{+} \to I^¼^{+} I^½_{I^} ¼$ . This work presents the first $B^{+} \to I^¼^{+} I^½_{I^} ¼$ result using Belle~II data, an updated Be…

hep-ex2026

Study of $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ (h = I ¨ , K, p)$ via initial-state radiation at Belle~II

Belle II Collaboration, M. Abumusabh, I. Adachi +417

Using a data sample of 427.9 fb $^{- 1}$ collected by the Belle~II detector at or near the $I^¥ (4 S)$ and $I^¥ (10753)$ resonances, the cross sections for $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ $ $(h=Ï/K…

hep-ex2026

Measurement of time-dependent $C P$ violation parameters in $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decays at Belle and Belle II

Belle, Belle II Collaborations, : +416

We perform a measurement of time-dependent $C P$ violation parameters in $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decays using a dataset of approximately $772 \times 1 0^{6}$ and $521 \times 10…

hep-ex2026

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

Belle, Belle II Collaborations, : +406

We present a search for an invisible hidden-sector particle $X_{inv}$ , produced in $B^{0} \to D ˉ^{0} X_{inv}$ and $B^{\pm} \to h X_{inv}$ decays, where $h = I ¨ ^{\pm}$ ,…

hep-ex2025

Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment

Belle II Collaboration, I. Adachi, L. Aggarwal +437

Inelastic dark matter models that have two dark matter particles and a massive dark photon can reproduce the observed relic dark matter density without violating cosmological limit…

hep-ex2025

Measurement of $B^{+} \to I ¨ ^{+} I^½_{I ¨} $ branching fraction with a hadronic tagging method at Belle II

Belle II Collaboration, I. Adachi, K. Adamczyk +341

We present a measurement of the branching fraction of $B^{+} \to I ¨ ^{+} I^½_{I ¨} $ decays using $(387 \pm 6) \times 1 0^{6}$ $I^¥ (4 S)$ collected between 2019 and 2022 with the Belle II detector at t…

Study of B+→I^¼+I^½I^​¼ decays at Belle and Belle II

Study of e+e−→h+h−J/I¨ (h=I¨, K, p) via initial-state radiation at Belle~II

Measurement of time-dependent CP violation parameters in B0→KS0​I¨0I^3 decays at Belle and Belle II

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

Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment

Measurement of B+→I¨+I^½I¨​ branching fraction with a hadronic tagging method at Belle II

Study of $B^{+} \to I^¼^{+} I^½_{I^} ¼$ decays at Belle and Belle II

Study of $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ (h = I ¨ , K, p)$ via initial-state radiation at Belle~II

Measurement of time-dependent $C P$ violation parameters in $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decays at Belle and Belle II

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

Measurement of $B^{+} \to I ¨ ^{+} I^½_{I ¨} $ branching fraction with a hadronic tagging method at Belle II