Effects of dynamical masses of gluons and quarks on hadronic B decays

We study hadronic annihilation decays of B mesons within the perturbative QCD at collinear approximation. The regulation of endpoint divergences is performed with the help of an infrared finite gluon propagator characterized by a non-perturbative dynamical gluon mass. The divergences at twist-3 are regulated by a dynamical quark mass. Our results fit quite well the existent data of B0 → Ds K+ and B0 → D−∗ s K̄+ for the expected range of dynamical gluon masses. We also make predictions for the rare decays B0 → K−K+, Bs → π−π+,π0π0, B+ → D (∗)+ s K̄0, B0 → D±(∗) s K∓ and Bs → D±(∗)π∓,D0π0.