CP violation in B decays at the BaBar experiment
Philip J. Clark (for the BaBar collaboration)
TL;DR
This paper reports measurements of CP violation parameter sin2beta, B meson lifetimes, and oscillation frequency using data from the BaBar experiment, providing insights into matter-antimatter asymmetry in B decays.
Contribution
First measurements of sin2beta, B meson lifetimes, and oscillation frequency at BaBar using data collected at the Y(4s) resonance.
Findings
Measured sin2beta as 0.34 +/- 0.20 (stat) +/- 0.05 (syst)
Determined B meson lifetimes and oscillation frequency
Provided preliminary results on CP violation in B decays
Abstract
The BaBar detector and SLAC PEP-II asymmetric e+e- collider tuned to the Y(4s) resonance has collected around 23M B0 anti-B0 pairs in year 2000. The total data sample for run 1 is 20.7fb-1, using this data we present the study of sin2beta, with samples of B0 --> J/Psi KOS, B0 --> psi(2S) K0S and B0 --> J/Psi KOL decays. The measured value is sin2beta 0.34+/-0.20 (stat) +/- 0.05 (syst),. In addition, we present preliminary measurements of charged and neutral B meson lifetimes and B0-anti B0 oscillation frequency.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · Particle Accelerators and Free-Electron Lasers