On the flavour dependence of the mixed quark-gluon condensate

The flavour dependence of the mixed quark-gluon condensate is studied through the analysis of correlators of the hybrid current αμ = gsγϱγ5Gϱμd. The flavour symmetry breaking for this type of condensates is found to be less than that for the quark condensates. For the ratio of strange to nonstrange condensates we obtain R = 0.95 ± 0.15. For the kaon coupling to the current aμ we find δ′2 = (0.020 ±0.005) GeV2, which is an order of magnitude smaller than analogous chirally unsuppressed coupling.