Factorization and polarization in two charmed-meson B decays

Abstract

We provide a comprehensive test of factorization in the heavy-heavy $B$ decays motivated by the recent experimental data from BELLE and BABAR collaborations. The penguin effects are not negligible in the B decays with two pseudoscalar mesons. The direct CP asymmetries are found to be a few percent. We give estimates on the weak annihilation contributions by analogy to the observed annihilation-dominated processes. The $N_c$ insensitivity of branching ratios indicates that the soft final state interactions are not dominant. We also study the polarizations in $B\to D^{\ast }{D}_{(s)}^{\ast }$ decays. The power law shows that the transverse perpendicular polarization fraction is small. The effects of the heavy quark symmetry breaking caused by the perturbative QCD and power corrections on the transverse polarization are also investigated.

23 pages, 1 figure, published version, one reference added

References in corpus (4)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Final State Interactions in Hadronic B Decays
• Is the BELLE result for the cross section e+e- -> J/psi+eta_c a real difficulty for QCD ?
• Polarizations in B -> VV decays

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• Weak decays of $J/\psi$: the non-leptonic case
• Semi-leptonic and Non-leptonic $B$ meson decays to charmed mesons
• Contribution of final state interaction to the branching ratio of $B\to J/\psi D$
• Improved measurement of B0bar --> Ds-D+ and search for B0bar --> Ds+Ds- at Belle
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• Study of Pure Annihilation Decays B_{d,s} \to D^{0} \bar D^{0}
• Prediction of the $CP$ asymmetry $C_{00}$ in $B^0\to D^0\overline{D^0}$ decay