Investigating the Drell-Yan transverse momentum distribution in the color dipole approach

Details Investigating the Drell-Yan transverse momentum distribution in the color dipole approach Investigating the Drell-Yan transverse momentum distribution in the color dipole approach

2003-03-12

arxiv.org/abs/hep-ph/0303100v2

Phys.Rev. D67 (2003) 114008

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 6 figures, revtex4 style. Version to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.67.114008

We study the influence of unitarity corrections on the Drell-Yan transverse momentum distribution within the color dipole approach. These unitarity corrections are implemented through the multiple scattering Glauber-Mueller approach, which is contrasted with a phenomenological saturation model. The process is analyzed for the center of mass energies of the Relativistic Heavy Ion Collider (RHIC, $\sqrt{s}=500$ GeV) and of the Large Hadron Collider (LHC, $\sqrt{s}=14$ TeV). In addition, the results are extrapolated down to current energies of proton-proton collisions, where non-asymptotic corrections to the dipole approach are needed. It is also shown that in the absence of saturation, the dipole approach can be related to the QCD Compton process.

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