Dilepton Transverse Momentum in the Color Dipole Approach

Abstract

We investigate the Drell-Yan transverse momentum distribution in the framework of the color dipole approach. Special attention is paid to parton saturation effects at high energies. Predictions at LHC energies ($\sqrt{s}=14$ TeV) are given and extrapolated down to ISR energies ($\sqrt{s}=62$ GeV). Unitarity corrections are implemented through the multiple scattering Glauber-Mueller approach and are compared with predictions of the BGBK saturation model.

Comments: 6 pages, 2 figures. Contribution to 11th International Workshop on Deep-Inelastic Scattering (DIS03), St. Petersburg, April 2003