Unintegrated generalized parton distributions
/ Authors
/ Abstract
We show how the generalized (or skewed) parton distributions of the proton, $\overline{H}(x,\ensuremath{\xi}{;k}_{t}^{2},{\ensuremath{\mu}}^{2}),$ unintegrated over the partonic transverse momenta, can be calculated from the known conventional parton distributions, $q(x,{\ensuremath{\mu}}^{2})$ and $g(x,{\ensuremath{\mu}}^{2}),$ for small values of the skewedness parameter $\ensuremath{\xi}.$ 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.
Journal: Physical Review D