Testing factorization in colour-suppressed beauty decays with the B -> η_c + K(K^*) modes

M. Gourdin, Y. Y. Keum, X. Y. Pham

The large discrepancy recently observed between $B \ra J/Ψ+ K (K^*)$ data and commonly used hadronic form factor models might be due to a breakdown of the factorization assumption.…