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arXiv · 2103.16593

One-loop impact factor for the emission of two gluons

Marc Canay·Vittorio Del Duca
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Abstract

We consider one-loop five-point QCD amplitudes in next-to-multi-Regge kinematics, and evaluate the one-loop impact factor for the emission of two gluons. This is the last ingredient which is necessary to evaluate the gluon-jet impact factor at NNLO accuracy in $\as$. It is also the first instance in which loop-level QCD amplitudes are evaluated in next-to-multi-Regge kinematics, which requires to apply a different reggeisation ansatz to each colour-ordered amplitude.

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Marc Canay, Vittorio Del Duca. 2021-03-30. One-loop impact factor for the emission of two gluons. https://doi.org/10.1007/jhep06(2021)034

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