Investigating the high energy QCD approaches for prompt photon production at the LHC

Abstract

We investigate the rapidity and transverse momentum distributions of the prompt photon production at the CERN LHC energies considering the current perturbative QCD approaches for this scattering process. Namely, we compare the predictions from the usual NLO pQCD calculations to the the color dipole formalism, using distinct dipole cross sections. Special attention is paid to parton saturation models at high energies, which are expected to be important at the forward rapidities in pp collisions at the LHC.

Contribution to the proceedings of the 3rd International Conference on Hard and Electro-Magnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2008), 8-14 June 2008, Illa da Toxa (Galicia-Spain). Talk presented by M.V.T. Machado

References in corpus (8)

• Measurement of direct photon production in p + p collisions at sqrt(s) = 200 GeV
• Geometric Scaling at RHIC and LHC
• Measuring gluon shadowing with prompt photons at RHIC and LHC
• Nuclear shadowing and prompt photons at relativistic hadron colliders
• Hadron and Photon Production in the Forward Region at RHIC and LHC
• Geometric Scaling at RHIC and LHC
• Enhancement of prompt photons in ultrarelativistic proton-proton collisions from nonlinear gluon evolution at small-$x$
• New Global Fit to the Total Photon-Proton Cross-Section sigma L+T and to the Structure Function F2