Charmless hadronic decays B -> PP,PV,VV and new physics effects in the general two-Higgs-doublet models - art. no. 074005

Based on the low-energy effective Hamiltonian with generalized factorizatio n, we calculate the new physics contributions to the branching ratios of th e two-body charmless hadronic decays of B-u and B-d mesons induced by the n ew gluonic and electroweak charged-Higgs penguin diagrams in the general tw o-Higgs doublet models (models I, II, and III). Within the considered param eter space, we find the following. (a) The new physics effects from new glu onic penguin diagrams strongly dominate over those from the new gamma- and Z(o)- penguin diagrams. (b) In models I and II, new physics contributions t o most studied B meson decay channels are rather small in size, from -15% t o 20%. (c) In model III, however, the new physics enhancements to the pengu in-dominated decay modes can he significant, similar to (30-200)%, and ther efore are measurable in forthcoming high precision B experiments. (d) The n ew physics enhancements to ratios B(B-->K eta') are significant in model II I, similar to (35-70)%, and hence provide a simple and plausible new physic s interpretation for the observed unexpectedly large B-->K eta' decay rates . (e) The theoretical predictions for B(B-->K(+)pi) and B(B-->K(o)pi (+)) i n model III are still consistent with the data within 2 sigma errors. (f) T he significant new physics enhancements to the blanching ratios of B-->K-o pi (o), K* eta, K*(+) pi (-), K+ phi, K(*o)omega, K*+ phi, and K(*o)phi dec ays are helpful to improve the agreement between the data and the theoretic al predictions. (g) The theoretical predictions of B(B -->PP,PV,VV) in the 2HDM's are generally consistent with experimental measurements and upper li mits (90% C,L.).