Searching systematics for nonfactorizable contributions to B- and (B)over-bar0 hadronic decays

The two-body weak decays (B) over bar -> pi D/(B) over bar -> rho D and (B) over bar -> pi D* are examined using isospin analysis to study nonfactorizable contributions. After determining strong interaction phases and obtaining factorizable contributions from spectator-quark diagrams for N-c=3, we determine nonfactorizable isospin amplitudes from the experimental data for these modes. Our results support the universality of the ratio of nonfactorizable isospin reduced amplitudes for these decays within experimental errors. To demonstrate that these systematics are not coincidental, we also plot our results w. r. t. this ratio.

Automated summary

In this study, nonfactorizable contributions in the two-body weak decays (B) over bar -> pi D/(B) over bar -> rho D and (B) over bar -> pi D* are examined using isospin analysis. Strong interaction phases are determined and factorizable contributions are obtained from spectator-quark diagrams. Nonfactorizable isospin amplitudes for these modes are determined from experimental data, and the results support the universality of the ratio of nonfactorizable isospin reduced amplitudes for these decays within experimental errors.