Run-Hui Li

B -> S transition form factors in the perturbative QCD approach

Under two different scenarios for the light scalar mesons, we investigate the transition form factors of

Decays of B meson to two charmed mesons

B(B_s)

Exclusive B-s decays to the charmed mesons D-s(+)(1968,2317) in the standard model

mesons decay into a scalar meson in the perturbative QCD approach. In the large recoiling region, the form factors are dominated by the short-distance dynamics and can be calculated using perturbation theory. We adopt the dipole parametrization to recast the

Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach

q^2

Branching ratios, forward-backward asymmetry, and angular distributions of B -> K(1)l(+)l(-) decays

dependence of the form factors. Since the decay constants defined by the scalar current are large, our predictions on the

The CKM suppressed decays in the perturbative QCD approach

Bto S

The CKM suppressed

form factors are much larger than the

B(B_s) \to \bar D_{(s)}P,\bar D_{(s)}V,\bar D_{(s)}^*P, \bar D_{(s)}^*V

Bto P

decays in perturbative QCD approach

transitions, especially in the second scenario. Contributions from various light-cone distribution amplitudes (LCDAs) are elaborated and we find that the twist-3 LCDAs provide more than a half contributions to the form factors. The two terms of the twist-2 LCDAs give destructive contributions in the first scenario while they give constructive contributions in the second scenario. With the form factors, we also predict the decay width and branching ratios of the semileptonic

What can we learn from B ---> a(1)(1260)(b(1)(1235)) pi(K) decays?

Bto Slbarnu