Dependence in nuclear Drell-Yan processes including QCD corrections

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.38.788· OSTI ID:6854000

Hwang, W P; Kisslinger, L S

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.

• Research Organization: Department of Physics, National Taiwan University, Taipei, Taiwan 10764, Republic of China
• OSTI ID: 6854000
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 38:3; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- Strong Interactions &amp; Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
DEEP INELASTIC SCATTERING
DIAGRAMS
DISTRIBUTION FUNCTIONS
DRELL MODEL
ELEMENTARY PARTICLES
FERMIONS
FEYNMAN DIAGRAM
FIELD THEORIES
FUNCTIONS
GAUGE INVARIANCE
GLUONS
HADRON-HADRON INTERACTIONS
IMPACT PARAMETER
INELASTIC SCATTERING
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
MATHEMATICS
MOMENTUM TRANSFER
NUMERICAL ANALYSIS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTONS
PERTURBATION THEORY
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SCATTERING