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arXiv · 0907.3416

Testing Non-linear Evolution with Running Coupling Corrections in $ep$ and $pp$ collisions

M. A. Betemps·V. P. Goncalves·J. T. de Santana Amaral
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Abstract

The perturbative QCD predicts that the growth of the gluon density at small-$x$ (high energies) should saturate, forming a Color Glass Condensate (CGC), which is described in mean field approximation by the Balitsky-Kovchegov (BK) equation. Recently, the next-to-leading order corrections for the BK equation were derived and a global fit of the inclusive $ep$ HERA data was performed, resulting in a parameterization for the forward scattering amplitude. In this paper we compare this parameterization with the predictions of other phenomenological models and investigate the saturation physics in diffractive deep inelastic electron-proton scattering and in the forward hadron production in $pp$ collisions. Our results demonstrate that the running coupling BK solution is able to describe these observables.

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M. A. Betemps, V. P. Goncalves, J. T. de Santana Amaral. 2009-11-23. Testing Non-linear Evolution with Running Coupling Corrections in $ep$ and $pp$ collisions. https://doi.org/10.1140/epjc%2Fs10052-009-1225-6

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