Papers - MATSUDA Tatsuro
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Search for baryon and lepton number violating decays D → p ℓ Reviewed
S. Maity , R. Garg, T. Matsuda et al.
Physical Review D 109 L031101 - 6pages 2024.2
Language：English Publishing type：Research paper (scientific journal)
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Measurement of branching fractions and direct C P asymmetries for B → K π and B → π π decays at Belle II Reviewed
I. Adachi , L. Aggarwal, T. Matsuda et al.
Physical Review D 109 012001 - 12pages 2024.1
Publishing type：Research paper (scientific journal)
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Observation of charmed strange meson pair production in Υ (2S) decays and in e+e− annihilation at √ s = 10.52 GeV Reviewed
B. S. Gao , W. J. Zhu, T. Matsuda et al.
Physical Review D 108 112015 - 11 pages 2023.12
Publishing type：Research paper (scientific journal)
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Search for a long-lived spin-0 mediator in b → s transitions at the Belle II experiment Reviewed
I. Adachi , K. Adamczyk, T. Matsuda et al.
Physical Review D 108 L111104 - 7 pages 2023.12
Publishing type：Research paper (scientific journal)
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Search for CP violation in D(s)+ → K+Ks0 h+ h− (h = K, π) decays and observation of the Cabibbo-suppressed decay Ds+ → K+ K− Ks0 π+ Reviewed
H. K. Moon , E. Won, T. Matsuda et al.
Physical Review D 108 L111102 - 7 pages 2023.12
Publishing type：Research paper (scientific journal)
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Study of B+ →p #En(/)#ERπ0 Reviewed
Chu K.N., Lin Y.R., Matsuda T., et al.
Physical Review D 108 ( 11 ) 112007 - 7 pages 2023.12
Publishing type：Research paper (scientific journal) Publisher：Physical Review D
We search for the tree-diagram dominated process B+→pn¯π0, using a data sample of 772×106BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. This is the first search with the Belle detector for a decay mode including an antineutron. No significant signal is observed and a 90% credible upper limit on the branching fraction is set at 6.3×10-6.
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Determination of | Vcb | using #EB(/)-#ER0 → D *+ ℓ− #Eν(/)-#ER ℓ decays with Belle II Reviewed
I. Adachi , L. Aggarwal, T. Matsuda et al.
Physical Review D 108 092013 - 26pages 2023.11
Publishing type：Research paper (scientific journal)
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Search for a Heavy Neutrino in τ Decays at Belle Reviewed
D. Liventsev , I. Adachi, T. Matsuda et al.
Physical Review Letters 131 211802 - 7 pages 2023.11
Publishing type：Research paper (scientific journal)
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First Simultaneous Determination of Inclusive and Exclusive | Vub | Reviewed
L. Cao, F. Bernlochner, T. Matsduda et al.
Physical Review Letters 131 211801 - 7 pages 2023.11
Publishing type：Research paper (scientific journal)
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Tests of Light-Lepton Universality in Angular Asymmetries of B0 → D*−ℓν Decays Reviewed
I. Adachi , K. Adamczyk, T. Matsuda et al.
Physical Review Letters 131 181801 - 7 pages 2023.10
Publishing type：Research paper (scientific journal)
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Precise Measurement of the Ds+ Lifetime at Belle II Reviewed
I. Adachi , L. Aggarwal, T. Matsuda et al.
Physical Review Letters 131 171803 - 7 pages 2023.10
Publishing type：Research paper (scientific journal)
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Measurement of CP asymmetries in B0 → ϕ Ks0 decays with Belle II Reviewed
I. Adachi , K. Adamczyk, T. Matsuda et al.
Physical Review D 108 072012 - 10 pages 2023.10
Publishing type：Research paper (scientific journal)
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Spin density matrix elements in exclusive ρ meson muoproduction Reviewed
Alexeev G.D., Alexeev M.G., Matsuda T., et al.
European Physical Journal C 83 ( 10 ) 924 - 25 pages 2023.10
Publishing type：Research paper (scientific journal) Publisher：European Physical Journal C
We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive ρ meson muoproduction at COMPASS using 160 GeV/c polarised μ+ and μ- beams impinging on a liquid hydrogen target. The measurement covers the kinematic range 5.0 GeV/ c2< W< 17.0 GeV/ c2 , 1.0 (GeV/c) 2< Q2< 10.0 (GeV/c) 2 and 0.01 (GeV/c) 2<pT2< 0.5 (GeV/c) 2 . Here, W denotes the mass of the final hadronic system, Q2 the virtuality of the exchanged photon, and pT the transverse momentum of the ρ meson with respect to the virtual-photon direction. The measured non-zero SDMEs for the transitions of transversely polarised virtual photons to longitudinally polarised vector mesons (γT∗→VL) indicate a violation of s-channel helicity conservation. Additionally, we observe a dominant contribution of natural-parity-exchange transitions and a very small contribution of unnatural-parity-exchange transitions, which is compatible with zero within experimental uncertainties. The results provide important input for modelling Generalised Parton Distributions (GPDs). In particular, they may allow one to evaluate in a model-dependent way the role of parton helicity-flip GPDs in exclusive ρ production.
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Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering Reviewed
G.D. Alexeev, M.G. Alexeev, T. Matsuda et al.
Physics Letters B 845 138155 - 8 pages 2023.10
Publishing type：Research paper (scientific journal)
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Search for a τ+τ− Resonance in e+e− → μ+μ−τ+τ− Events with the Belle II Experiment Reviewed
I. Adachi , K. Adamczyk, T. Matsuda et al.
Physical Review Letters 131 121802 - 8 pages 2023.9
Publishing type：Research paper (scientific journal)
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Measurement of CP asymmetries and branching-fraction ratios for B± → DK± and Dπ± with D → K±π∓ using Belle and Belle II data Reviewed
The Belle and Belle II collaborations, I. Adachi, L. Aggarwal, T. Matsuda et al.
Journal of High Energy Physics 2023 146 - 23 pages 2023.9
Publishing type：Research paper (scientific journal)
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Measurement of CP Violation in B0 → Ks0 π0 Decays at Belle II Reviewed
I. Adachi , K. Adamczyk, T. Matsuda et al.
Physical Review D 131 111803 - 8 pages 2023.9
Publishing type：Research paper (scientific journal)
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Search for Bs→ ℓ∓τ± with the semi-leptonic tagging method at Belle Reviewed
The Belle collaboration, L. Nayak, S. Nishida, T. Matsuda et al.
Journal of High Energy Physics 2023 178 - 11 pages 2023.8
Publishing type：Research paper (scientific journal)
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Measurement of the e+e− → Bs0#ERB(/)-#ERs0X cross section in the energy range from 10.63 to 11.02 GeV using inclusive Ds+ and D0 production Reviewed
The Belle collaboration, V. Zhukova, R. Mizuk, T. Matsuda et al.
Journal of High Energy Physics 2023 131 - 27 pages 2023.8
Publishing type：Research paper (scientific journal)
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Search for the double-charmonium state with ηcJ/ψ at Belle Reviewed
The Belle collaboration, J. H. Yin, Y. B. Li, T. Matsuda et al.
Journal of High Energy Physics 2023 121 - 19 pages 2023.8
Publishing type：Research paper (scientific journal)