Hadronic Mass Moments in B -> X_c l nu Decays

2005/09/10 by Belle Collaboration
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/0509013

openalex publication_date 2005/09/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report measurements of the first and second moments of the hadronic invariant mass squared distribution, and )²>, in B -> X_c l nu decays for minimum lepton momenta ranging from 0.7 to 1.5 GeV/c in the B meson rest frame. The measurement uses BBbar events in which the hadronic decay of one B meson is fully reconstructed and the semileptonic decay of the other B is inferred from the presence of an identified lepton. These results are obtained from a 140 fb^-1 data sample collected near the Y(4S) resonance with the Belle detector at the KEKB asymmetric energy e⁺e^- collider.

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