2001/10/25 by C. Touramanis, Touramanis, C.
Physics and Astronomy · #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/0110064
11 pages, 5 figures, contributed to the Proceedings of the International Europhysics Conference on HEP (HEP2001)
arxiv created 2001/10/25 · arxiv updated 2009/11/30
The BABAR detector, operating at energies near the Υ(4S) resonance at the PEP-II asymmetric B Factory at SLAC, has collected a sample of 32 million B B pairs by May 2001. A study of time-dependent CP-violating asymmetries in events where one neutral B meson is fully reconstructed in a final state containing charmonium has resulted in the measurement sin2β=0.59 ± 0.14 \rm (stat) ± 0.05 \rm (syst), which establishes CP violation in the B0 meson system at the 4σ level. B lifetime and mixing measurements from a sub-sample of 23 million B B pairs are also presented.