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 αs. 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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ArXiv ePrint: 2103.16593
On leave from: INFN, Laboratori Nazionali di Frascati, Italy (Vittorio Del Duca).
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Canay, M., Del Duca, V. One-loop impact factor for the emission of two gluons. J. High Energ. Phys. 2021, 34 (2021). https://doi.org/10.1007/JHEP06(2021)034
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DOI: https://doi.org/10.1007/JHEP06(2021)034