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Title: Dependence in nuclear Drell-Yan processes including QCD corrections

Abstract

In treating leading-order QCD corrections to deep-inelastic scattering and the Drell-Yan process, one assumes that collinear singularities arising from the massless nature of the non-Abelian gauge theory be absorbed into parton distributions through redefinition. It has also been suggested that terms which are not perfectly finite near q/sub perpendicular/ = 0 be suitably exponentiated in the impact-parameter space in order to yield proper predictions on q/sub perpendicular/-dependent effects. These steps may lead to negative partial Drell-Yan cross sections for certain QCD diagrams of order ..cap alpha../sub s/. We modify the formalism developed by Altarelli et al. to ensure that all partial cross sections are non-negative. We use the revised formalism to make predictions on A-dependent effects in the nuclear Drell-Yan process. Our numerical results indicate strongly the potential usefulness of measuring lepton pair production cross sections in a region with a large M/sub ..mu..//sub <+/..mu../sup =/ and a large q/sub perpendicular/ so that perturbative QCD theory is expected to play a critical role.

Authors:
;
Publication Date:
Research Org.:
Department of Physics, National Taiwan University, Taipei, Taiwan 10764, Republic of China
OSTI Identifier:
6854000
Resource Type:
Journal Article
Journal Name:
Phys. Rev. D; (United States)
Additional Journal Information:
Journal Volume: 38:3
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; HADRON-HADRON INTERACTIONS; DEEP INELASTIC SCATTERING; DRELL MODEL; LEPTONS; PAIR PRODUCTION; CROSS SECTIONS; DISTRIBUTION FUNCTIONS; FEYNMAN DIAGRAM; GAUGE INVARIANCE; GLUONS; IMPACT PARAMETER; MOMENTUM TRANSFER; NUMERICAL ANALYSIS; PARTONS; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; QUARKS; DIAGRAMS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; FUNCTIONS; INELASTIC SCATTERING; INTERACTIONS; INVARIANCE PRINCIPLES; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; MATHEMATICS; PARTICLE INTERACTIONS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SCATTERING; 645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties; 645400 - High Energy Physics- Field Theory

Citation Formats

Hwang, W P, and Kisslinger, L S. Dependence in nuclear Drell-Yan processes including QCD corrections. United States: N. p., 1988. Web. doi:10.1103/PhysRevD.38.788.
Hwang, W P, & Kisslinger, L S. Dependence in nuclear Drell-Yan processes including QCD corrections. United States. https://doi.org/10.1103/PhysRevD.38.788
Hwang, W P, and Kisslinger, L S. 1988. "Dependence in nuclear Drell-Yan processes including QCD corrections". United States. https://doi.org/10.1103/PhysRevD.38.788.
@article{osti_6854000,
title = {Dependence in nuclear Drell-Yan processes including QCD corrections},
author = {Hwang, W P and Kisslinger, L S},
abstractNote = {In treating leading-order QCD corrections to deep-inelastic scattering and the Drell-Yan process, one assumes that collinear singularities arising from the massless nature of the non-Abelian gauge theory be absorbed into parton distributions through redefinition. It has also been suggested that terms which are not perfectly finite near q/sub perpendicular/ = 0 be suitably exponentiated in the impact-parameter space in order to yield proper predictions on q/sub perpendicular/-dependent effects. These steps may lead to negative partial Drell-Yan cross sections for certain QCD diagrams of order ..cap alpha../sub s/. We modify the formalism developed by Altarelli et al. to ensure that all partial cross sections are non-negative. We use the revised formalism to make predictions on A-dependent effects in the nuclear Drell-Yan process. Our numerical results indicate strongly the potential usefulness of measuring lepton pair production cross sections in a region with a large M/sub ..mu..//sub <+/..mu../sup =/ and a large q/sub perpendicular/ so that perturbative QCD theory is expected to play a critical role.},
doi = {10.1103/PhysRevD.38.788},
url = {https://www.osti.gov/biblio/6854000}, journal = {Phys. Rev. D; (United States)},
number = ,
volume = 38:3,
place = {United States},
year = {1988},
month = {8}
}