Published June 1, 1980 | Version v1
Journal article Metadata-only

Fourth-order quantum-chromodynamic contributions to the e+-e- annihilation cross section

Creators

  • 1. Department of Physics, B-019, University of California, San Diego, La Jolla, California 92093

Description

We compute analytically the logarithmic corrections to the photon propagator to order g4 in massless quantum chromodynamics. With α/sub c/=g2/4π2 defined by momentum-space subtraction, we find that sigma(e+e- → hadrons)/sigma(e+e- → μ+μ-) =Σ/sub q/epsilon/sub q/ 2(1+α/sub c/+Kα/sub c/ 2+xxx), where K=463/48+(85/36 √3)Cl2(π/3)-11zeta(3)+[(2/3)zeta(3)-23/36]n/sub f/ =-2.193+0.162n/sub f/ for n/sub f/ flavors of quark. The computation is done in momentum space using a novel generalization to 4-epsilon dimensions of the usual Chebyshev-polynomial expansion of Feynman propagators

Additional details

Publishing Information

Journal Title
Phys. Rev., D
Journal Volume
21
Journal Issue
11
Series
Phys. Rev., D.
Journal Page Range
3112-3128
ISSN
0556-2821

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
11554056
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ANNIHILATION; COUPLING CONSTANTS; ELECTRON-POSITRON INTERACTIONS; FEYNMAN PATH INTEGRAL; FLAVOR MODEL; HADRONS; MASSLESS PARTICLES; MUONS; PAIR PRODUCTION; PARTON MODEL; PERTURBATION THEORY; PHOTONS; PROPAGATOR; QUANTUM CHROMODYNAMICS; QUARKS; SU-3 GROUPS; TOTAL CROSS SECTIONS
Descriptors DEC
COMPOSITE MODELS; CROSS SECTIONS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; INTEGRALS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; LIE GROUPS; MATHEMATICAL MODELS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; POSTULATED PARTICLES; QUANTUM FIELD THEORY; QUARK MODEL; SU GROUPS; SYMMETRY GROUPS