Quark-antiquark contribution to the multigluon amplitudes in the helicity formalism

Details Quark-antiquark contribution to the multigluon amplitudes in the helicity formalism Quark-antiquark contribution to the multigluon amplitudes in the helicity formalism

1996-04-04

arxiv.org/abs/hep-ph/9604250v1

Phys.Rev.D54:4474-4482,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 24 pages (including 5 compressed uuencoded figures)

Scientific paper

10.1103/PhysRevD.54.4474

Using the helicity formalism, we compute the contribution of a quark-antiquark pair to the tree-level multigluon amplitudes in the high-energy limit. The $\bar{q}\, q$-pair production is absent in the leading-log formalism, but contributes to the next-to-leading corrections to it, and is therefore relevant for the computation of parton-parton scattering in the high-energy limit and of the gluon anomalous dimension at small $x_{bj}$, at next-to-leading accuracy.

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