Threeloop form factors for Higgs boson pair production in the large top mass limit
Abstract
We consider the virtual corrections to Higgs boson pair production at nextto nexttoleading order, in the large top quark mass limit. We compute five expansion terms for the boxtype form factors and eight expansion terms for the triangle form factor, which serve as useful input for the construction of approximations. We present analytic results for the form factors in the softvirtual approximation.From a technical point of view the calculation is quite challenging since huge intermediate expressions are produced. We describe our methods and optimizations to overcome these difficulties, which might be useful for other calculations.
 Publication:

Journal of High Energy Physics
 Pub Date:
 October 2019
 DOI:
 10.1007/JHEP10(2019)166
 arXiv:
 arXiv:1909.01361
 Bibcode:
 2019JHEP...10..166D
 Keywords:

 NLO Computations;
 QCD Phenomenology;
 High Energy Physics  Phenomenology
 EPrint:
 23 pages