Eur Phys J C (2004) 33: s343-s345
https://doi.org/10.1140/epjcd/s2004-03-1637-2

PS03 CP Violation

Time-dependent CP violation in B ⁰→ K ⁰ _s φ, and K ⁰ _s K ⁺ K ^– in the Belle and BaBar experiments

Institute for High Energy Physics of the Austrian Academy of Sciences, Nikolsdorfergasse 18, Vienna A1050, Austria

Received: 30 October 2003
Accepted: 6 January 2004
Published online: 6 February 2004

Abstract

Both the Belle and BaBar collaborations have recently measured time-dependent CP violation in B ⁰ decays to states and compared the results to those for states for which quite precise results were previously available. Within the framework of the standard model the same results should be expected for both cases. The decays to states are dominated by penguin diagrams and may be sensitive to physics beyond the standard model. For these states, compared to the results for states, a discrepancy in the mixing-induced CP violation of 2.7 standard deviations was found, and may be interpreted as an indication for physics beyond the standard model.

PACS: 11.30.Er Charge conjugation, parity, time reversal, andother discrete symmetries – 12.15.Hh Determination of Kobayashi-Maskawa matrix elements – 13.25.Hw Decays of bottom mesons