Scattering of Gluons from the Color Glass Condensate

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  • 27 November 2001
Abstract
We consider the inelastic scattering of a real on-shell gluon on the strong classical color field of a proton (or nucleus) at very high energies, that is a Color Glass Condensate. We derive the gluon-proton (nucleus) inelastic cross section and show that it is (up to logarithms) infrared safe and that it grows slowly with center of mass energy. Furthermore, we discuss jet transverse momentum broadening for the case of nuclear targets. We show that in the saturation regime, in contrast to the perturbative regime, the width of the transverse momentum distribution is infrared finite and grows rapidly with energy. In both regimes, however, transverse momentum broadening exibits the same A dependence.

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