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We study the strange and non-strange quark mass dependence of the parametersof the f_0(600), kappa(800), rho(770) and K*(892) resonances generated fromelastic meson-meson scattering using unitarized one-loop Chiral PerturbationTheory. We fit simultaneously all experimental scattering data up to 0.8-1 GeVtogether with lattice results on decay constants and scattering lengths up to apion mass of 440 MeV. Then, the strange and non-strange quark masses are variedfrom the chiral limit up to values of interest for lattice studies. In theseamplitudes, the mass and width of the rho(770) and K*(892) present a similarand smooth quark mass dependence. In contrast, both scalars present a similarnon-analyticity at high quark masses. Nevertheless the f_0(600) dependence onboth quark masses is stronger than for the kappa(800) and the vectors. We alsoconfirm the lattice assumption of quark mass independence of the vectortwo-meson coupling that, in contrast, is violated for scalars.

f_0(600), kappa(800), rho(770) and K*(892), quark mass dependence from unitarized SU(3) Chiral Perturbation Theory