Measurement of the B⁰-anti-B⁰ oscillation frequency in hadronic B⁰ Decays

2001/07/11 by B. Aubert, Aubert, B.
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 #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0107036

17 pages, 3 figures, 3 tables, submitted to EPS2001

arxiv created 2001/07/11 · openalex publication_date 2001/07/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

B⁰-anti-B⁰ flavor oscillations have been studied in 20.7 fb-1 of e⁺e^- annihilation data collected in 1999 and 2000 with the BABAR detector at center-of-mass energies near the Upsilon(4S) resonance. The event sample consists of one B⁰ meson fully reconstructed in a hadronic decay mode, while the flavor of the recoiling B⁰ in the event is determined with a tagging algorithm that exploits the correlation between the flavor of the heavy quark and the charges of its decay products. By fitting the time development of the observed mixed and unmixed final states, the B⁰-anti-B⁰ oscillation frequency, Delta_md, is determined to be 0.519+/- 0.020+/- 0.016 ps^-1.

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