Is there a non-Standard-Model contribution in non-leptonic b → s decays?

Precision measurements of branching fractions and CP asymmetries in non-leptonic b → s decays reveal certain 'puzzles' when compared with Standard Model expectations based on a global fit of the CKM triangle and general theoretical expectations. Without reference to a particular model, we investigate to what extent the (small) discrepancies observed in B → J/ψK, B → φK and B → Kπ may constrain new physics in b → sq q-bar operators. In particular, we compare on a quantitative level the relative impact of different quark flavours q = c, s, u, d.