Next-to-leading order QCD corrections to ΔF = 2 effective hamiltonians Original Research Article

The most general QCD next-to-leading anomalous-dimension matrix of all four-fermion dimension-six ΔF = 2 operators is computed. The results of this calculation can be used in many phenomenological applications, among which the most important are those related to theoretical predictions of K0-K̄0 and B0-B̄0 mixing in several extensions of the Standard Model (supersymmetry, left-right symmetric models, multi-Higgs models, etc.), to estimates the B0s−B̄0s width difference, and to the calculation of the O(1/mb3) corrections for inclusive b-hadron decay rates.