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Evaluation of multipoles for photo- and electroproduction of pions

II. Numerical results for the photoproduction of pions on protons

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Zeitschrift für Physik A Hadrons and nuclei

Abstract

In this paper we present the detailed results of an evaluation of the multipole amplitudes for photoproduction of pions on nucleons. We have solved the dispersion relations for the multipolesE 0+,M 1−,M 1+,E 1+,E 2−2 andM 2− by the Muskhelishvili-Omnès method using an appropriate ansatz for the inelastic multipole amplitudes. Four phenomenological parameters occuring in our theory have been determined by a least squares fit of theπ 0 experimental different cross section data. Except at pion CM-angles between 50°0 and 80°0 and at 180°0 inπ 0 production there is satisfactory agreement between theory and experiment for all measured differential cross sections, polarizations and asymmetries ofπ 0- andπ +-photoproduction.

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Authors and Affiliations

  1. Physikalisches Institut der Universität Bonn, Deutschland

    D. Schwela & R. Weizel

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  1. D. Schwela
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  2. R. Weizel
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Schwela, D., Weizel, R. Evaluation of multipoles for photo- and electroproduction of pions. Z. Physik 221, 71–105 (1969). https://doi.org/10.1007/BF01392064

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  • DOI: https://doi.org/10.1007/BF01392064

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