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arXiv · hep-ph/0102224

Resummation of target mass corrections in two-photon processes: twist-two sector

A. V. Belitsky·D. Müller
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Abstract

We develop a formalism for the resummation of target mass corrections in off-forward two-photon amplitudes given by a chronological product of electromagnetic currents, arising in e.g. deeply virtual Compton scattering. The method is based on a relation of composite operators with a definite twist to harmonic tensors, which form an irreducible representation of the Lorentz group. We give an application of the framework for the matrix elements of twist-two operators.

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A. V. Belitsky, D. Müller. 2001-02-22. Resummation of target mass corrections in two-photon processes: twist-two sector. https://doi.org/10.1016/s0370-2693(01)00425-7

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