Nonleptonic B to charmonium decays generally show deviations from the
factorization predictions. For example, the mode BββKβΟc0β 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 BββKβhcβ with hcβ the JPC=1+βcΛc meson.
Using an effective lagrangian describing interactions of pairs of heavy-light
QqΛβ mesons with a quarkonium state, we relate this mode to the
analogous mode with Οc0β in the final state. We find B(BββKβhcβ) large enough to be measured at the B factories, so that this decay
mode could be used to study the poorly known hcβ.Comment: RevTex, 16 pages, 2 eps figure