Nonfactorizable contributions in B decays to charmonium: the case of $B^- \to K^- h_c$

Details Nonfactorizable contributions in B decays to charmonium: the case of $B^- \to K^- h_c$ Nonfactorizable contributions in B decays to charmonium: the case of $B^- \to K^- h_c$

2003-10-07

arxiv.org/abs/hep-ph/0310084v1

Phys.Rev. D69 (2004) 054023

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTex, 16 pages, 2 eps figures

Scientific paper

10.1103/PhysRevD.69.054023

Nonleptonic $B$ to charmonium decays generally show deviations from the factorization predictions. For example, the mode $B^- \to K^- \chi_{c0}$ has been experimentally observed with sizeable branching fraction while its factorized amplitude vanishes. We investigate the role of rescattering effects mediated by intermediate charmed meson production in this class of decay modes, and consider $B^- \to K^- h_c$ with $h_c$ the $J^{PC}=1^{+-}$ $\bar c c$ meson. Using an effective lagrangian describing interactions of pairs of heavy-light $Q{\bar q}$ mesons with a quarkonium state, we relate this mode to the analogous mode with $\chi_{c0}$ in the final state. We find ${\cal B}(B^- \to K^- h_c)$ large enough to be measured at the $B$ factories, so that this decay mode could be used to study the poorly known $h_c$.

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