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arXiv · hep-ph/9710256

Effective QCD coupling and power corrections to photon-photon scattering

F. Hautmann
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Abstract

The scattering of two off-shell photons is an infrared-safe process in QCD. For photon virtualities in the range of a few GeV, accessible at LEPII, power-behaved contributions to the total cross section may become non-negligible. Based on a dispersion relation for the running coupling, we discuss these contributions and calculate the coefficients of the leading power correction for transversely polarized and longitudinally polarized virtual photons.

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F. Hautmann. 1997-10-06. Effective QCD coupling and power corrections to photon-photon scattering. https://doi.org/10.1103/physrevlett.80.3198

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