2015/09/10 by A. Bala, J. B. Singh, Bala, A. +5
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Superconducting Materials and Applications #hep-ex
paper · pdf · doi:10.48550/arxiv.1509.03341
8 Pages, 3 Figures, Charm 2015 Conference Presented by V. Bhardwaj for Belle Collaboration
arxiv created 2015/09/10 · openalex publication_date 2015/09/10 · arxiv updated 2015/09/14 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
We report the first observation of B0 → X(3872) (K+π-) and evidence for B+ → X(3872) (K0π+). The product of branching fractions for the former decay mode is measured to be \cal B(B0 → X(3872) (K+ π-)) × \cal B(X(3872) → J/ψπ+ π-) = (7.9 ± 1.3(stat.)± 0.4(syst.)) × 10-6 and also find that B0→ X(3872) K*(892)0 does not dominate the B0→ X(3872)K+π- decay mode in contrast to other charmonium states like ψ'. The product of branching fractions for the latter decay mode is measured to be \cal B(B+ → X(3872) (K0 π+)) × \cal B(X(3872) → J/ψπ+ π-) = (10.6 ± 3.0(stat.) ± 0.9(syst.)) × 10-6. This study is based on the full and final data sample of 711~fb-1 (772× 106 B B pairs) collected at the Υ(4S) resonance with the Belle detector at the KEKB collider.