Direct photons and dileptons via color dipoles

B. Z. Kopeliovich; A. H. Rezaeian; H. J. Pirner; Ivan Schmidt

doi:10.1016/j.physletb.2007.07.055

Direct photons and dileptons via color dipoles

High Energy Physics - Phenomenology 2010-03-25 v2 Nuclear Theory

Authors: B. Z. Kopeliovich , A. H. Rezaeian , H. J. Pirner , Ivan Schmidt

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Abstract

Drell-Yan dilepton pair production and inclusive direct photon production can be described within a unified framework in the color dipole approach. The inclusion of non-perturbative primordial transverse momenta and DGLAP evolution is studied. We successfully describe data for dilepton spectra from 800-GeV pp collisions, inclusive direct photon spectra for pp collisions at RHIC energies $\sqrt{s}=200$ GeV, and for $p\bar{p}$ collisions at Tevatron energies $\sqrt{s}=1.8$ TeV, in a formalism that is free from any extra parameters.

Keywords

Drell-Yan direct photons dileptons color dipole DGLAP evolution

Cite

@article{arxiv.0704.0642,
  title  = {Direct photons and dileptons via color dipoles},
  author = {B. Z. Kopeliovich and A. H. Rezaeian and H. J. Pirner and Ivan Schmidt},
  journal= {arXiv preprint arXiv:0704.0642},
  year   = {2010}
}

Comments

7 pages, 4 figures. Results unchanged, two new plots added to show (data-theory)/theory, NLO pQCD curve is added. To appear in PLB

Direct photons and dileptons via color dipoles

Abstract

Keywords

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