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The donnachie-landshoff pomeron and gauge invariance

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Abstract

The pomeron model of Donnachie and Landshoff does not conserve the electromagnetic current when applied to diffractive reactions such as electroproduction of a quark-antiquark pair or of a vector meson. We propose a treatment of this problem which ensures a physical behaviour of cross sections in the photoproduction limit and show that it leads to results rather similar to those obtained from two-gluon exchange.

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  1. DAPNIA/SPhN, CEA/Saclay, F-91191, Gif sur Yvette CEDEX, France

    M. Diehl

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  1. M. Diehl
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Diehl, M. The donnachie-landshoff pomeron and gauge invariance. Eur. Phys. J. C 6, 503–510 (1999). https://doi.org/10.1007/s100529800927

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  • DOI: https://doi.org/10.1007/s100529800927

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