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Features of diffractive scattering and the nature of the N1(1400) observed in NNN(Nπ) reactions at 5.7 GeV/c
Authors:Z Strachman
Institution:LPNHE Université Pierre et Marie Curie, Paris 5e, France
Abstract:The results for the diffractive scattering contribution (F120) obtained in a cross channel isospin analysis of the NNN(Nπ) reactions at 5.7 GeV/c are compared with those obtained for other ZN → Z′(Nπ) reactions where Z stands for N, π and the carbon nucleus. The dependence of the diffractive scattering on the mass MπN and the momentum transfer t seems very weakly related to the nature of Z and the incident momentum.A comparison between amplitudes of the isospin exchange Iex = 0 and Iex = 1 leading to N12 production shows that N12(1492) and N12(1670) are produced essentialy through Iex = 1.
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