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arXiv · hep-ph/9604250

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

Vittorio Del Duca
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Abstract

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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Vittorio Del Duca. 1996-04-04. Quark-antiquark contribution to the multigluon amplitudes in the helicity formalism. https://doi.org/10.1103/physrevd.54.4474

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