The ρ(1S, 2S), ψ(1S, 2S), Iyen(1S, 2S) and ψ t (1S, 2S) Mesons in a Double Pole QCD Sum Rule

We use the method of double pole QCD sum rule, which is basically a fit with two exponentials of the correlation function, where we can extract the masses and decay constants of mesons as a function of the Borel mass. We apply this method to study the mesons: rho(1S,2S), psi(1S,2S), Iyen(1S,2S), and psi (t) (1S,2S). We also present predictions for the toponiuns masses psi (t) (1S,2S) of m(1S)=357 GeV and m(2S)=374 GeV.