Skip to content

Observation of CP violation in the B0 system

C. Touramanis

hep-exarXiv:hep-ex/0110064

Abstract

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 2β=0.59 0.14 (stat) 0.05 (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.

Create a lesson