Determination of the π π scattering length in the effective-radius approximation
Kartamyshev A.A. , Makar'in V.K. , Mukhin K.N. , Patarkin O.O., Sulkovskaya M.M., Sustarov A.F.
We present the results of the calculation of S and Ρ scattering wavelengths in the effective-radius approximation, on the basis of a phase shift analysis of π~7τ+ interaction in the interval 360 < т7Г7Т<960 MeV.