Gluon penguin enhancements to inclusive charmless decays of b quark in the 2HDM with flavor changing couplings

We calculate the enhancements to the inclusive charmless decays of b quark, b→sg,sqq̄,sgg, from gluon penguin diagrams induced by the charged and neutral Higgs bosons (H±,h0,H0, and A0) in the Two-Higgs-Doublet Model with flavor-changing couplings. Within the considered parameter space, the new contributions from charged Higgs boson are dominant. After including the new contributions, the branching ratio BR(b→sg) (q2=0) can be increased form ∼0.2% in the standard model to 4.4% and 2.6% in the two-Higgs-doublet model for mH+=100 and 200 GeV, respectively. The new contribution to the decay mode b→sqq̄ with q=(u,d,s) is, however, numerically small and peaked at the lower q2 region. The new contribution to b→sgg can also be neglected.