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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
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Ekta Chaubey |
| Submission information | |
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| Preprint Link: | scipost_202202_00048v1 (pdf) |
| Date accepted: | 2022-04-06 |
| Date submitted: | 2022-02-24 16:16 |
| Submitted by: | Chaubey, Ekta |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Phenomenological |
Abstract
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)
Reports on this Submission
Strengths
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
Weaknesses
None
Report
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.