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Double scattering and infrared sensitivity for nuclear targets

Journal Article · · Phys. Rev. D; (United States)
Single-particle and two-particle inclusive cross sections for p+A..-->..hadrons at high P/sub perpendicular/ are studied using QCD in a multiple-scattering expansion. Single-particle cross sections are shown to be infrared divergent. In contrast with this, the leading contribution to nonplanar two-particle inclusive scattering is calculated without a cutoff. The result is consistent with the available data, but a large bremsstrahlung background masks the multiple-scattering signal. This background can be eliminated by studying the forward/backward asymmetry of the events in the projectile-nucleon c.m. system. This asymmetry is approx.0.1 on a W target at 800-GeV laboratory energy and is sensitive to the small-x structure of the target.
Research Organization:
Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook, New York 11794-3840
OSTI ID:
5921538
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 36:9; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ASYMMETRY
BARYON REACTIONS
BREMSSTRAHLUNG
CENTER-OF-MASS SYSTEM
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
CROSS SECTIONS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
HADRONS
INCLUSIVE INTERACTIONS
INFRARED DIVERGENCES
INTERACTIONS
MATHEMATICAL MODELS
MOMENTUM TRANSFER
MULTIPLE SCATTERING
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTON MODEL
PROTON REACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATIONS
SCATTERING