First Physics Results at BABAR

2000/12/01 by Di Lodovico, Francesca
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.hep-ex/0012005

Abstract

The BABAR detector, which operates at the SLAC PEP-II asymmetric e⁺e^- collider at energies near the Y(4S) resonance, started operation on the 26th of May 1999. We present the first study of sin2beta, with samples of B0 --> J/psi K0S and B0 --> psi(2S) K0S decays, using 9.0 fb-1 of data recorded between January and July 2000 at the Y(4S) resonance and 0.8 fb-1 recorded 40 MeV below the Y(4S) resonance. A preliminary result of sin2beta = 0.12+/-0.37 (stat) +/- 0.09 (syst) was obtained. Details of the analysis are given. Moreover, we present measurements of charged and neutral B meson lifetimes and B⁰ B⁰bar oscillation frequency.

Related

• Physics at BABAR
• Measurements of CP violation, mixing and lifetimes in B meson decays with the BABAR experiment at PEP-II
• New Results From BABAR
• CP violation, B mixing and B lifetime results from the BABAR experiment
• Recent Results of BABAR