High Energy Physics - Phenomenology
[Submitted on 4 Apr 2005 (v1), last revised 13 Jun 2005 (this version, v3)]
Title:Nonfactorizable contributions to $B$ meson decays into charmonia
View PDFAbstract: We analyze the $B\to (J/\psi, \chi_{c0},\chi_{c1},\eta_c)K^{(*)}$ decays, which have small or even vanishing branching ratios in naive factorization assumption (FA). We calculate nonfactorizable corrections to FA in the perturbative QCD approach based on $k_T$ factorization theorem. The charmonium distribution amplitudes are inferred from the non-relativistic heavy quarkonium wave functions. It is found that the nonfactorizable contributions enhance the branching ratios and generate the relative phases among helicity amplitudes of the above modes. Most of the observed branching ratios, polarization fractions, and relative phases, except those of $B\to\eta_c K$, are explained. Our predictions for the $B\to (\chi_{c0},\chi_{c1},\eta_c)K^*$ decays can be compared with future data.
Submission history
From: Chuan Hung Chen [view email][v1] Mon, 4 Apr 2005 14:55:20 UTC (37 KB)
[v2] Thu, 14 Apr 2005 12:50:50 UTC (37 KB)
[v3] Mon, 13 Jun 2005 14:42:24 UTC (37 KB)
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