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R. Okubo

0009-0009-0912-0678
hep-exphysics.ins-detnucl-ex

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W_6nkzdk5z·v1 · currentpublished
Measurements of the branching fractions of Λc+→ΛK+π0Λ_c^+\toΛK^+ π^0 and Λc+→ΛK+ηΛ_c^+\toΛK^+ η decays at Belle and Belle II
with Belle, Belle II Collaborations, :, M. Abumusabh +399
1 version

Preprints & journals

41 papers in the corpus · 2022–2026
Test of lepton flavor universality with Bˉ→D(∗)τ−νˉτ\bar{B} \rightarrow D^{(*)} \tau^{-} \bar{\nu}_{\tau} and Bˉ→D(∗)ℓ−νˉℓ\bar{B} \rightarrow D^{(*)} \ell^{-} \bar{\nu}_{\ell} decays at Belle II2609.21947v1 · M. Abumusabh, I. Adachi, K. Adamczyk et al.2026 · 0 citationsarXiv
Search for the lepton-flavor-violating decay $ \tau^{\pm} \to \mu^{\pm} \gamma$ at Belle II2608.23009v1 · M. Abumusabh, I. Adachi, A. Aggarwal et al.2026 · 0 citationsarXiv
Searches for Charged-Lepton-Flavor Violation in χ_bJ(1P) Decays.42675404 · Abumusabh, M, Adachi, I, Aggarwal, A et al.2026 · 0 citationsPhysical review letters. 2026;137(7):071803
Search for the Decay B^+→K^+τ^+τ^- Using Data from the Belle and Belle II Experiments.42606420 · Abumusabh, M, Adachi, I, Adamczyk, K et al.2026 · 0 citationsPhysical review letters. 2026;137(5):051805
Search for axion-like particles decaying to two photons at Belle II2607.07800v1 · M. Abumusabh, I. Adachi, A. Aggarwal et al.2026 · 0 citationsarXiv
Charged-lepton identification at Belle~II2606.26274v1 · M. Abumusabh, I. Adachi, A. Aggarwal et al.2026 · 0 citationsarXiv
First evidence of X(3872)→π0χc0(1P)X(3872)\to\pi^0\chi_{c0}(1P) and search for X(3915)→π0χc1(1P)X(3915)\to\pi^0\chi_{c1}(1P)2606.24578v1 · Belle, Belle II Collaborations: M. Abumusabh, I. Adachi et al.2026 · 0 citationsarXiv
Measurement of mixing-induced CP violation in the decay B0→π0π0B^0 \to \pi^0 \pi^02606.20797v1 · M. Abumusabh, I. Adachi, K. Adamczyk et al.2026 · 0 citationsarXiv
First Search for B→X_sνν[over ¯] Decays.42360933 · Abumusabh, M, Adachi, I, Adamczyk, K et al.2026 · 1 citationPhysical review letters. 2026;136(23):231801
Observation of the decays B+→Σc(2455)++Ξˉc′−B^{+} \to \Sigma_{c}(2455)^{++} \bar{\Xi}_{c}^{\prime-} and B0→Σc(2455)0Ξˉc′0B^{0} \to \Sigma_{c}(2455)^{0} \bar{\Xi}_{c}^{\prime0}2606.12905v2 · Belle, Belle II Collaborations: M. Abumusabh, A. Aggarwal et al.2026 · 0 citationsPhysical Review D 114, 052016 (2026)
Measurement of time-dependent CPCP violation parameters in B0→KS0π0γB^{0} \to K_{S}^{0} \pi^{0} \gamma decays at Belle and Belle II2606.04496v2 · Belle, Belle II Collaborations: M. Abumusabh, I. Adachi et al.2026 · 0 citationsJHEP 09 (2026) 216
Studies on photon-feedback and LaB6_6 photocathode for the GasPM development2605.23542v1 · Simone Garnero, Kenji Inami, Kodai Matsuoka et al.2026 · 0 citationsarXiv
Recent GasPM advances: photon-feedback mitigation and LaB6_{6} photocathode studies2603.06375v1 · Simone Garnero, Kenji Inami, Kodai Matsuoka et al.2026 · 0 citationsarXiv
Study of e+e−→π+π−Υ(1D)e^+e^- \to \pi^+\pi^-\Upsilon(1D) at Belle II2602.19807v2 · M. Abumusabh, I. Adachi, A. Aggarwal et al.2026 · 0 citationsJHEP06(2026)278
Study of e+e−→h+h−J/ψ (h=π, K, p)e^{+}e^{-}\to h^{+}h^{-}J/\psi~(h=\pi,~K,~p) via initial-state radiation at Belle~II2602.13569v3 · M. Abumusabh, I. Adachi, A. Aggarwal et al.2026 · 0 citationsPhys. Rev. D 113, 112010 (2026)
Study of B+→μ+νμB^+ \to \mu^+ \nu_\mu decays at Belle and Belle II2602.09800v2 · Belle, Belle II Collaborations: M. Abumusabh, I. Adachi et al.2026 · 0 citationsPhys. Rev. D 113, 112012 (2026)
Measurement of inclusive B→XuℓνB \to X_u \ell \nu partial branching fractions and ∣Vub∣|V_{ub}| at Belle II2512.08056v2 · M. Abumusabh, I. Adachi, K. Adamczyk et al.2025 · 1 citationarXiv
Improved measurement of Born cross sections for χbJ ω\chi_{bJ}\,\omega and χbJ (π+π−π0)non−ω\chi_{bJ}\,(\pi^+\pi^-\pi^0)_{\rm non-\omega} (JJ = 0, 1, 2) at Belle and Belle II2510.25461v2 · Belle, Belle II Collaborations: I. Adachi, L. Aggarwal et al.2025 · 0 citationsJHEP04(2026)101
Measurement of the CPCP asymmetry in D0→π+π−π0D^0\to\pi^+\pi^-\pi^0 decays at Belle II2510.21224v2 · M. Abumusabh, I. Adachi, L. Aggarwal et al.2025 · 1 citationPhys. Rev. D 113 (2026) 052006
First measurements of the branching fractions for the decay modes Ξc0→Λη\Xi_c^{0} \to \Lambda \eta and Ξc0→Λη′\Xi_c^0 \to \Lambda \eta' and search for the decay Ξc0→Λπ0\Xi_c^{0} \to \Lambda \pi^0 using Belle and Belle II data2510.20882v2 · Belle, Belle II Collaborations: M. Abumusabh, I. Adachi et al.2025 · 2 citationsPhys. Rev. D 113, 032015 (2026)
Search for B^0→K^*0τ^+τ^- Decays at the Belle II Experiment.41138105 · Adachi, I, Adamczyk, K, Aggarwal, L et al.2025 · 3 citationsPhysical review letters. 2025;135(15):151801
Measurement of time-dependent CPCP asymmetries in B0→KS0 π+π−γB^0 \to K_{\rm S}^0 \: \pi^{+} \pi^{-} \gamma decays at Belle and Belle II2510.01331v2 · Belle, Belle II Collaborations: M. Abumusabh, I. Adachi et al.2025 · 0 citationsVolume 01, year 2026, article 134
Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment.41076698 · Adachi, I, Aggarwal, L, Ahmed, H et al.2025 · 4 citationsPhysical review letters. 2025;135(13):131801
Observation of e+e−→ηΥ(2S)e^+e^-\to\eta\Upsilon(2S) and search for e+e−→ηΥ(1S), γXbe^+e^-\to\eta\Upsilon(1S),~\gamma X_b at s\sqrt{s} near 10.75 GeV2509.01917v2 · I. Adachi, L. Aggarwal, H. Ahmed et al.2025 · 0 citationsarXiv
Search for e+e−→γχbJe^+ e^- \to \gamma\chi_{bJ} (JJ = 0, 1, 2) near s=10.746\sqrt{s} = 10.746 GeV at Belle II2508.16036v2 · M. Abumusabh, I. Adachi, L. Aggarwal et al.2025 · 0 citationsPhys. Rev. D 113, 052009 (2026)
Search for the lepton-flavor-violating τ−→e∓ℓ±ℓ∓\tau^{-} \rightarrow e^{\mp} \ell^{\pm} \ell^{\mp} decays at Belle II2507.18236v2 · I. Adachi, L. Aggarwal, H. Ahmed et al.2025 · 2 citationsarXiv
Model-agnostic likelihood for the reinterpretation of the B+→K+ννˉB^+\to K^+\nu\bar{\nu} measurement at Belle II2507.12393v2 · M. Abumusabh, I. Adachi, L. Aggarwal et al.2025 · 4 citationsPhys. Rev. D 112, 092016, 2025
Observation of the decays B+→Σc(2455)++Ξ‾c−B^{+} \to \Sigma_{c}(2455)^{++} \overline{\Xi}_{c}^{-} and B0→Σc(2455)0Ξ‾c0B^{0} \to \Sigma_{c}(2455)^{0} \overline{\Xi}_{c}^{0}2507.05094v3 · Belle, Belle II Collaborations: M. Abumusabh, I. Adachi et al.2025 · 4 citationsPhys. Rev. D 112, L051101 (2025)
Measurement of the CP asymmetry in D+→π+π0D^+ \to \pi^+ \pi^0 decays at Belle II2506.07879v2 · I. Adachi, L. Aggarwal, H. Ahmed et al.2025 · 2 citationsPhys. Rev. D 112, L031101 (2025)
Charged-hadron identification at Belle II2506.04355v3 · I. Adachi, H. Ahmed, Y. Ahn et al.2025 · 13 citationsarXiv
Search for lepton flavor-violating decay modes B0→K∗0τ±ℓ∓B^0 \to K^{\ast 0}\tau^\pm\ell^\mp (ℓ=e,μ\ell = e,\mu) with hadronic B-tagging at Belle and Belle II2505.08418v2 · Belle, Belle II Collaborations: I. Adachi, Y. Ahn et al.2025 · 0 citationsJHEP08(2025)184
Measurement of the time-integrated CPCP asymmetry in D0→π0π0D^0\to\pi^0\pi^0 decays at Belle II2505.02912v3 · I. Adachi, Y. Ahn, N. Akopov et al.2025 · 2 citationsPhys. Rev. D 112, 012006 (2025)
The Imaging Time-of-Propagation Detector at Belle II2504.19090v2 · Hulya Atmacan, Matt Belhorn, Yinghui Guan et al.2025 · 9 citationsNuclear Instruments and Methods in Physics Research A 1080 (2025) 170627
Search for lepton-flavor-violating τ−→ℓ−Ks0\tau^- \to \ell^- K_s^0 decays at Belle and Belle II2504.15745v1 · Belle, Belle II Collaborations: I. Adachi, L. Aggarwal et al.2025 · 1 citationJ. High Energ. Phys. 2025, 92 (2025)
Measurement of the time-integrated CPCP asymmetry in D0→KS0KS0D^0 \to K^0_{\rm S} K^0_{\rm S} decays using opposite-side flavor tagging at Belle and Belle II2504.15881v2 · Belle, Belle II Collaborations: I. Adachi, Y. Ahn et al.2025 · 1 citationPhys. Rev. D 112, 012017 (2025)
Test of lepton flavor universality with measurements of R(D+)R(D^{+}) and R(D∗+)R(D^{*+}) using semileptonic BB tagging at the Belle II experiment2504.11220v3 · I. Adachi, K. Adamczyk, L. Aggarwal et al.2025 · 6 citationsPhys. Rev. D 112, 032010 (2025)
Development of a picosecond-timing Cherenkov detector using gaseous photomultiplification2502.17025v1 · R. Okubo, K. Matsuoka, T. Iijima et al.2025 · 0 citationsarXiv
Measurement of B+→τ+ντB^+\to\tau^+\nu_\tau branching fraction with a hadronic tagging method at Belle II2502.04885v1 · I. Adachi, K. Adamczyk, H. Ahmed et al.2025 · 4 citationsPhys. Rev. D 112, 072002 (2025)
Measurement of the branching fraction, polarization, and time-dependent CPCP asymmetry in B0→ρ+ρ−B^0 \to \rho^+\rho^- decays and constraint on the CKM angle ϕ2\phi_22412.19624v2 · I. Adachi, L. Aggarwal, H. Ahmed et al.2024 · 0 citationsPhys. Rev. D 111, 092001, 2025
Demonstration of a 25-picosecond single-photon time resolution with gaseous photomultiplication2302.12694v2 · K. Matsuoka, R. Okubo, Y. Adachi2023 · 6 citationsarXiv
Measurement of Branching Fraction and Longitudinal Polarization in B0→ρ+ρ−B^0 \to \rho^+ \rho^- Decays at Belle II2208.03554v1 · F. Abudin'en, I. Adachi, K. Adamczyk et al.2022 · 2 citationsarXiv
Career total: at least 89 works. 41 are in this corpus.

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