Factorization and polarization in two charmed-meson B decays

C. H. Chen, C. Q. Geng, Z. T. Wei

Research output: Contribution to journalArticle

16 Citations (Scopus)


We provide a comprehensive test of factorization in the heavy-heavy B decays motivated by the recent experimental data from the 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 Nc insensitivity of branching ratios indicates that the soft final state interactions are not dominant. We also study the polarizations in B→D*D (s) * 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.

Original languageEnglish
Pages (from-to)367-377
Number of pages11
JournalEuropean Physical Journal C
Issue number2
Publication statusPublished - 2006 May 1

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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