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Quark initial state interaction in deep inelastic scattering and the Drell-Yan process

O. Linnyk*, S. Leupold, and U. Mosel

  • Institut für Theoretische Physik, Universität Giessen, Germany

  • *olena.linnyk@theo.physik.uni-giessen.de
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Phys. Rev. D 71, 034009 – Published 7 February, 2005Erratum Phys. Rev. D 75, 059901 (2007)

DOI: https://doi.org/10.1103/PhysRevD.71.034009

Abstract

We pursue a phenomenological study of higher-twist effects in high-energy processes by taking into account the off-shellness (virtuality) of partons bound in the nucleon. The effect of parton off-shellness in deep inelastic ep→eX scattering (DIS) and the Drell-Yan process (pp→ll¯X) is examined. Assuming factorization and a single-parameter Breit-Wigner form for the parton spectral function, we develop a model to calculate the corresponding off-shell cross sections. Allowing for a finite parton width ≈100  MeV, we reproduce the data of both DIS and the triple-differential Drell-Yan cross section without an additional K-factor. The results are compared to those from perturbative QCD and the intrinsic-kT approach.

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Erratum

Erratum: Quark initial state interaction in deep inelastic scattering and the Drell-Yan process [Phys. Rev. D 71, 034009 (2005)]

O. Linnyk, S. Leupold, and U. Mosel
Phys. Rev. D 75, 059901 (2007)

Article Text

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Phys. Rev. D 71, 034009– Published 7 February, 2005
  • Received 9 December 2004

© 2005 American Physical Society

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