Breit-Wigner characteristics of nucleon resonance S_{11}(1535)

The results of the partial-wave analysis of the angular distributions for the process Gamma p - Etha p at the energies upto 2 GeV are given. From the energy dependence of the regressoin coefficient a_0(W) the reliable estimates of the Breit-Wigner parameters of S_{11}(1535)-resonance and the energy dependence of real and imagenery parts of electric dipol amplitude E_{0+} and its phase were obtained.

Document number: 2003-4/717

Authors: E.V.Balandina, E.M.Leikin, N.P.Yudin


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