Resolving the (g-2)μ and B anomalies with leptoquarks and a dark Higgs boson

At present, there are outstanding discrepancies between standard model predictions and measurements of the muon's g - 2 and several B-meson properties. We resolve these anomalies by considering a two-Higgs-doublet model extended to include leptoquarks and a dark Higgs boson S. The leptoquarks modify B-meson decays and also induce an S gamma gamma coupling, which contributes to the muon's g - 2 through a Barr-Zee diagram. We show that, for TeV-scale leptoquarks and dark Higgs boson masses m(S) similar to 10-200 MeV, a consistent resolution to all of the anomalies exists. The model predicts interesting new decays, such as B -> K-(*()) e(+)e(-), B -> K-(*())gamma gamma, K -> pi gamma gamma and h -> gamma gamma gamma gamma, with branching fractions not far below current bounds.