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High energy behaviour of total cross sections in weak interactions

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Zeitschrift für Physik C Particles and Fields

Abstract

We propose a new method for the computation of the high energy limit of the total cross section in spontaneously broken gauge theories. It is based on an evolution equation for effective couplings in dependence on the gauge boson mass. We apply this method to weak interactions in the leading logarithm approximation. Perturbation theory becomes invalid at very high energies since one of the couplings becomes strong. The obtained total cross sections obey Froissart's bound, in contrast to previous results not using the evolution equation.

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Supported in part by grants BST 192 and GR-11 from the Committee of Scientific Research and G-MEN 148/90

Supported in part by the Grant No 1044/P3/P2 from the Committee of Scientific Research

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Pindor, M., Rączka, R. & Wetterich, C. High energy behaviour of total cross sections in weak interactions. Z. Phys. C - Particles and Fields 61, 125–137 (1994). https://doi.org/10.1007/BF01641895

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  • DOI: https://doi.org/10.1007/BF01641895

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