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Is a subtraction really necessary in the isospin even πN dispersion relation?

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Zeitschrift für Physik

Abstract

It is shown that the assumption of anunsubtracted fixed-t dispersion relation for the isospin evenπN amplitudeA + is compatible with all data. The prediction for the subtraction function agrees reasonably well with independent determinations. The assumption has the consequence that the ratio of thes-channel helicity flip and non flip amplitudes vanishes in the high energy limit.

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  1. Institut für Theoretische Kernphysik der Universität Karlsruhe, Deutschland

    G. Höhler &  R. Strauss

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  1. G. Höhler
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  2. R. Strauss
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Supported by “Bundesministerium für Bildung und Wissenschaft”.

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Höhler, G., Strauss, R. Is a subtraction really necessary in the isospin even πN dispersion relation?. Z. Physik 232, 205–222 (1970). https://doi.org/10.1007/BF01391518

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  • DOI: https://doi.org/10.1007/BF01391518

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