Inclusive gluon production in high energy onium-onium scattering
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Date
2005-11-11
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American Physical Society
Abstract
We calculate the inclusive single-gluon production cross section in high energy onium-onium scattering including pomeron loop effects. The resulting inclusive cross section is given by the k_T-factorization formula with one of the unintegrated gluon distribution functions depending on the total onium-onium scattering cross section, which includes all pomeron loops and has to be found independently. We discuss the limits of applicability of our result and argue that they are given by the limits of applicability of the pomeron loop resummation approach. Since the obtained k_T-factorization formula is infrared divergent we conclude that, in order to consistently calculate the (infrared-finite) gluon production cross section in onium-onium scattering, one has to include corrections going beyond the pomeron loop approximation.
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Yuri V. Kovchegov, "Inclusive gluon production in high energy onium-onium scattering," Physical Review D 72, no. 9 (2005), doi:10.1103/PhysRevD.72.094009