Measurement of the Absolute Branching Fraction of D0 -> K- pi+

2006/12/01 by R. Godang, Godang, Romulus
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/0612002

openalex publication_date 2006/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We measure the absolute branching fraction for D0 → K^- π⁺ using partial reconstruction of B0bar → D^*+ X ℓ^- ν_ℓ decays. Only the charged lepton and the soft pion from the decay D^*+ → D⁰ π⁺ are used. Based on a data sample of 230 million BBbar pairs collected at the Υ(4S) resonance with the \babar detector at the PEP-II asymmetric-energy B Factory at SLAC, we obtain \cal B(\Dz → \Km \pip) = (4.025 ± 0.038 ± 0.098)%, where the first error is statistical and the second error is systematic.

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