arXiv subjects

F. M. Al-Shamali

Publications and source records attributed to F. M. Al-Shamali.

4 recordsLinked to original sources

arXiv1999

Factorization and Nonfactorization in B Decays

Using NLL values for Wilson coefficients and including the contributions from the penguin diagrams, we estimate the amount of nonfactorization in two-body hadronic B decays. Also, we investigate the model dependence of the nonfactorization parameters by performing the calculation using different models for the form factors. The results support the universality of nonfactorizable contributions in both Cabibbo-favored and Cabibbo-suppressed B decays.

hep-ph↗

arXiv1999

Nonfactorization in Cabibbo-Favored B Decays

We assume universal values for the color-singlet ($ε_1$) and color octet ($ε_8$) 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 $ε_1(μ_0) = - 0.06 +/- 0.03$ and $ε_8(μ_0) = 0.12 +/- 0.02$ improve significantly the predictions of the factorization model.

hep-ph↗

arXiv1998

Nonfactorization and Final State Interactions in (B, B_s) --> ψP and ψV Decays

Available experimental data on decay rates for B --> ψK, and decay rates and transversity amplitudes for B --> ψK^* are used to investigate nonfactorization contributions in these decays using five different theoretical models for the formfactors. Using the knowledge on nonfactorization so gained, we study the processes B_s --> ψ(η, η'), B_s --> ψϕand B --> ψ(2S) K^*. We find that present experimental data for the last two processes are consistent with the predictions of most of the models considered.

hep-ph↗

arXiv1996

Non-Factorization in $(B, B_s) \to P(V) ψ$ Decays

Available experimental data on decay rate and polarization are used to investigate non-factorization contribution to processes of the kind $B \rightarrow K ψ$, and $B \rightarrow K^* ψ$ using five theoretical models for the formfactors. Using the knowledge on non-factorization gained from $B$ decays we study the processes $B_s \rightarrow (η', η) ψ$, and $B_s \rightarrow ϕψ$ where experimental data are very limited.

hep-ph↗