Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel


Change log
Authors
Badger, S 
Chaubey, E 
Hartanto, HB 
Marzucca, R 
Abstract

jats:titleAjats:scbstract</jats:sc> </jats:title>jats:pWe present a complete set of analytic helicity amplitudes for top quark pair production via gluon fusion at two-loops in QCD. For the first time, we include corrections due to massive fermion loops which give rise to integrals over elliptic curves. We present the results of the missing master integrals needed to compute the amplitude and obtain an analytic form for the finite remainders in terms of iterated integrals using rationalised kinematics and finite field sampling. We also study the numerical evaluation of the iterated integrals.</jats:p>

Description
Keywords
Perturbative QCD, Scattering Amplitudes
Journal Title
Journal of High Energy Physics
Conference Name
Journal ISSN
1029-8479
1029-8479
Volume Title
2021
Publisher
Springer Science and Business Media LLC
Sponsorship
European Research Council (683211)