Shedding new light on weak annihilation B-meson decays

We identify a novel leading-power contribution to the pure weak annihilation non-leptonic B-meson decay amplitudes, which arises from hard-collinear gluon exchange between light quark of bottom meson and final-state active partons. This interesting observation is naturally expected shed new on deciphering rapidity divergences in convolution integrals soft-collinear factorization formulae. Subsequently we explore an intriguing enhancement mechanism due penguin contractions current-current operators effective Hamiltonian, yields significant impacts CP violating observables.