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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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Submission summary

Authors (as registered SciPost users): Ekta Chaubey
Submission information
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
Academic field: Physics
Specialties:
  • High-Energy Physics - Theory
  • High-Energy Physics - Phenomenology
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)



Submission & Refereeing History

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Submission scipost_202202_00048v1 on 24 February 2022

Reports on this Submission

Anonymous Report 1 on 2022-2-28 (Invited Report)

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.

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