Factorization and polarization in two charmed-meson B decays

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dc.creatorChen, Chuan-Hung
dc.creatorGeng, Chao-Qiang
dc.creatorWei, Zheng-Tao
dc.date2005-07-26
dc.date2005-12-23
dc.date.accessioned2026-07-07T12:25:12Z
dc.date.available2026-07-07T12:25:12Z
dc.descriptionWe 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 $B\to D^*D_{(s)}^*$ 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.
dc.description23 pages, 1 figure, published version, one reference added
dc.identifierhttps://arxiv.org/abs/hep-ph/0507295
dc.identifierhttp://arxiv.org/abs/hep-ph/0507295
dc.identifierEur.Phys.J.C46:367-377,2006
dc.identifierdoi:10.1140/epjc/s2006-02476-y
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214544
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleFactorization and polarization in two charmed-meson B decays
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