Nonfactorization in Cabibbo-favoredBdecays

We assume universal values for the color-singlet $\left({\varepsilon }_1\right)$ and color-octet $\left({\varepsilon }_8\right)$ nonfactorization parameters in B decays. Two sets of color-favored processes and one set of color-suppressed processes were used to give quantitative estimates of these parameters. It has been found (by calculating the branching ratios for a large number of Cabibbo-favored B decays) that the values ${\varepsilon }_1\left({\mu }_0\right)=-0.06\pm 0.03$ and ${\varepsilon }_8\left({\mu }_0\right)=0.12\mathrm{}\pm 0.02$ improve significantly the predictions of the factorization model.