Abstract
Abstract
We compute the three-loop helicity amplitudes for $$ q\overline{q} $$
q
q
¯
→ gg and its crossed partonic channels, in massless QCD. Our analytical results provide a non-trivial check of the color quadrupole contribution to the infrared poles for external states in different color representations. At high energies, the qg → qg amplitude shows the predicted factorized form from Regge theory and confirms previous results for the gluon Regge trajectory extracted from qq′ → qq′ and gg → gg scattering.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Cited by
11 articles.
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