Role of Quark - Gluon Degenerate States in Perturbative {QCD} - INSPIRE

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Role of Quark - Gluon Degenerate States in Perturbative {QCD}

Aug, 1981

16 pages

Published in:

Phys.Rev.D 25 (1982) 2222

DOI:

10.1103/PhysRevD.25.2222

Report number:

RIFP-451

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Abstract: (APS)

Motivated by the fact that the noncancellation of the infrared divergences in quantum chromodynamics may be avoided by using the soft degenerate states or the coherent states in the initial state, we examine possible effects of introducing the degenerate states on the one-loop finite piece in the hard-scattering cross sections like qq¯→γX in the Drell-Yan process. We find the effects of the soft degenerate states cancel out among themselves leaving no finite contribution to the cross sections.

QUANTUM CHROMODYNAMICS: PERTURBATION THEORY
QUARK ANTIQUARK: INCLUSIVE REACTION
MODEL: DRELL-YAN
GAUGE FIELD THEORY: INFRARED PROBLEM
FEYNMAN GRAPH: HIGHER-ORDER

References(25)

Figures(0)

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