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Corrections to Weinberg's pion-pion scattering lengths

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Zeitschrift für Physik A Hadrons and nuclei

Abstract

We derive twice subtracted dispersion sum rules for theππ scattering lengths. The subtraction constants are the Weinberg values, and the dispersion integrals yield small corrections in good agreement with other authors.

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Authors and Affiliations

  1. Physikalisches Institut, Universität Bonn, Federal Republic of Germany

    P. Grassberger

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  1. P. Grassberger
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Grassberger, P. Corrections to Weinberg's pion-pion scattering lengths. Z. Physik 264, 241–252 (1973). https://doi.org/10.1007/BF01396280

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  • DOI: https://doi.org/10.1007/BF01396280

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