Nuclear size and rapidity dependence of the saturation scale from QCD evolution and experimental data

Albacete, J. L.; Armesto, N.; Milhano, J. G.; Salgado, C. A.; Wiedemann, U. A.

Nuclear size and rapidity dependence of the saturation scale from QCD evolution and experimental data

Authors

Description

The solutions of the Balitsky-Kovchegov evolution equations are studied numerically and compared with known analytical estimations. The rapidity and nuclear size dependences of the saturation scale are obtained for the cases of fixed and running coupling constant. These same dependences are studied in experimental data, on lepton-nucleus, deuteron-nucleus and nucleus-nucleus collisions, through geometric scaling and compared with the theoretical calculations.
8 pages, 8 figures. Contribution based on talks given by J. G. Milhano and C. A. Salgado to the proceedings of ``Hard Probes 2004'', Ericeira (Portugal), November 4-10, 2004