ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2003, vol. 91, p. 2616021-2616026
Measurement of Time-Dependent CP-Violating Asymmetries in B0 → φ Ks 0, K+K- K s 0 and η′ Ks 0 Decays
An improved measurement of the CP-violation parameters in decays based on a 140 fb-1 data sample was presented. One neutral B meson was reconstructed in one of the specified decay channels. Results show that there is a large CP-violating phase in its decay amplitude. It was also observed that the CP asymmetry in the decay differs from the standard model expectation by 3. 5 standard deviations.