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Master integrals contributing to two-loop leading colour QCD helicity amplitudes for top-quark pair production in the gluon fusion channel
by Ekta Chaubey
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|Authors (as registered SciPost users):
|SciPost Physics Proceedings
|15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2021)
We discuss the analytic structure of the master integrals relevant for computing the com- plete set of leading-colour analytic helicity amplitudes for top-quark pair production via gluon fusion at two loops in QCD. This includes corrections due to massive fermion loops which give rise to integrals involving elliptic curves. We also elaborate on the structure of singularities that play an important role in the numerical evaluation of the iterated integrals and their analytic continuation.
Published as SciPost Phys. Proc. 7, 001 (2022)
Submission & Refereeing History
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Reports on this Submission
1.- State-of-the-art study of massive multi-loop scattering amplitudes. 2.- Progress in understanding of two-loop Feynman integrals singularity structure when massive propagators present
The article reports on the work presented at RADCOR/LoopFest 2021. It fulfills all the requirements for publication in SciPost Proceedings and therefore we recommend its publication.