B → X_s ℓ⁺ ℓ^- at Belle

2002/07/01 by K. Senyo, Senyo, K.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.hep-ex/0207005

openalex publication_date 2002/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Evidence for the inclusive B → X_s ℓ⁺ ℓ^- decay has been presented based on 41.8 fb-1 data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider. A preliminary result for the branching fraction is B(B → X_s ℓ⁺ ℓ^-) = (7.1 +- 1.6 (stat.) + 1.4 - 1.2(syst.)) × 10^-6.

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