Effects of initial-state QCD interactions in the Drell-Yan process

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.39.3287· OSTI ID:6039066

Bodwin, G T; Brodsky, S J; Lepage, G P

We develop a simple, intuitive picture of the effects, in the Drell-Yan process, of initial-state interactions between the projectile and the target. For purposes of illustration, we present specific analyses in terms of a nonrelativistic QED model. However, our principal conclusions are valid in QCD as well. We show that initial-state interactions lead to an increase in the average of the square of the transverse momentum of the lepton pair that is proportional to the length of the target, and we also demonstrate that initial-state interactions can invalidate the parton-model (factorized) form of the cross section unless the beam energy is greater than a scale that grows with the length of the target.

• Research Organization: High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439(US); Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309; Department of Applied Mathematics and Theoretical Physics, Cambridge University, Cambridge, United Kingdom; Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14853
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6039066
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 39:11; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645203 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
COMPOSITE MODELS
CROSS SECTIONS
DRELL MODEL
ELECTRODYNAMICS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-NUCLEON INTERACTIONS
ELECTRON-PROTON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
LINEAR MOMENTUM
MATHEMATICAL MODELS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTON MODEL
PERTURBATION THEORY
QUANTUM CHROMODYNAMICS
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
STORAGE RINGS
SUPERCONDUCTING SUPER COLLIDER
TRANSVERSE MOMENTUM