TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.18.007
TI  - Towards two-loop QCD corrections to $ pp \to t \bar{t} j$
PY  - 2026/01/29
UR  - https://scipost.org/SciPostPhysProc.18.007
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 18
SP  - 007
A1  - Brancaccio, Colomba
AB  - I discuss the status of the computation of the two-loop QCD corrections to top-quark pair production associated with a jet at hadron colliders. This amplitude is a missing ingredient for next-to-next-to-leading order (NNLO) QCD predictions. I briefly present computational techniques to tackle the algebraic and analytic complexities of two-loop multi-scale amplitudes, in particular where massive propagators give rise to elliptic Feynman integrals. I then describe how a special function basis for the helicity amplitudes is obtained and present first numerical evaluations for the finite remainders of the $gg\to t\bar{t}g$ channel, after the infrared and ultraviolet poles have been identified analytically.
ER  -

@Article{10.21468/SciPostPhysProc.18.007,
	title={{Towards two-loop QCD corrections to $ pp \to t \bar{t} j$}},
	author={Colomba Brancaccio},
	journal={SciPost Phys. Proc.},
	pages={007},
	year={2026},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.18.007},
	url={https://scipost.org/10.21468/SciPostPhysProc.18.007},
}