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arXiv · hep-ph/0107149

Unintegrated generalised parton distributions

A. D. Martin·M. G. Ryskin
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Abstract

We show how the generalised (or skewed) parton distributions of the proton, H(x, xi; k_t^2, mu^2), unintegrated over the partonic transverse momenta, can be calculated from the known conventional parton distributions, q(x, mu^2) and g(x, mu^2), for small values of the skewedness parameter xi. We demonstrate the procedure by numerically evaluating the skewed unintegrated gluon. We also provide a simple approximate phenomenological form of the distribution, which may be used to make more rapid predictions of observables.

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A. D. Martin, M. G. Ryskin. 2001-07-13. Unintegrated generalised parton distributions. https://doi.org/10.1103/physrevd.64.094017

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