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

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.

12.38.Aw
12.38.Bx
13.85.Qk
p p: inclusive reaction
lepton: pair production
Drell-Yan process
transverse momentum: spectrum
unitarity: correction
color: dipole
multiple scattering

References(38)

Figures(0)

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