2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/214246Precision 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/psi K), (B -> phi K) and (B -> K pi) may constrain new physics in (b -> s q qbar) operators. In particular, we compare on a quantitative level the relative impact of different quark flavours q=c,s,u,d.25 pages, 7 figures, some references added, brief discussion of B -> J/psi πincludedHigh Energy Physics - Phenomenologytext