Higher-twist term in inclusive pion production at large transverse momentum
Journal Article
·
· Phys. Rev., D; (United States)
We calculate the absolute rate and kinematic dependence of the cross sections for the high-twist subprocesses qG..--> pi..q and qq-bar..--> pi..G in perturbative quantum chromodynamics (QCD). These cross sections are used to estimate the high-twist contribution to large-transverse-momentum inclusive single-pion production in hadronic collisions. We compare the normalization of these terms with leading-order minimum-twist QCD processes such as qG..-->..qG. The high-twist contributions are shown to be quantitatively important for p/sub T/less-than-tilde6 GeV/sup 2/ and x/sub T/greater-than-tilde0.5, and they should be included in detailed analyses of data. We discuss cross sections and charge ratios, and we comment briefly about inclusive spin-correlation measurements at large p/sub T/.
- Research Organization:
- High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6756495
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 23:1; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645201* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BOSONS
COMPOSITE MODELS
CROSS SECTIONS
ELEMENTARY PARTICLES
FIELD THEORIES
GLUONS
HADRONS
INCLUSIVE INTERACTIONS
INTERACTIONS
LINEAR MOMENTUM
MATHEMATICAL MODELS
MESONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTON MODEL
PERTURBATION THEORY
PIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK-ANTIQUARK INTERACTIONS
SPIN
TRANSVERSE MOMENTUM
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BOSONS
COMPOSITE MODELS
CROSS SECTIONS
ELEMENTARY PARTICLES
FIELD THEORIES
GLUONS
HADRONS
INCLUSIVE INTERACTIONS
INTERACTIONS
LINEAR MOMENTUM
MATHEMATICAL MODELS
MESONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTON MODEL
PERTURBATION THEORY
PIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK-ANTIQUARK INTERACTIONS
SPIN
TRANSVERSE MOMENTUM