出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The recently observed color suppressed B0 → D0p0, D0h(′), D+s K− and D0K0 decay modes all
have rates larger than expected, hinting at the presence of final state interactions. We study rescattering
effects in B → DP, DK and DK modes in the quasi-elastic approach, which is extended
to accommodate D0h′ without using U(3) symmetry. The D0K modes are of interest in the determination
of the unitarity angle f3/g . The updated DP data are used to extract the effective
Wilson coefficients aeff
1 ≃ 0.92, aeff
2 ≃ 0.22, three strong phases d ≃ 62◦, q ≃ 24◦, s ≃ 127◦, and
the mixing angle t ≃ 2◦. The values of d and q are close to our previous results. The smallness
of t implies small mixing of D0h1 with other modes. Predictions for D0K−, D+K− and D0K0
agree with data. Since strong interaction respects charge conjugation symmetry, the framework
applies to B → DK, and rates for D0K−, D−K0, D−s p0, D−s h and D−s h′ modes are predicted.
From B− →D0K− and D0K− rates, we find rB = 0.09±0.02, where the error is propagated from
the experimental DP rate uncertainties. The error on rB is doubled when the universality on aeff
2
is relaxed.
