Higgs boson gluon-fusion production beyond threshold in N 3 LO QCD

Anastasiou, Charalampos (Institute for Theoretical Physics, ETH Zürich, 8093, Zürich, Switzerland) ; Duhr, Claude (Center for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, Chemin du Cyclotron 2, 1348, Louvain-La-Neuve, Belgium) ; Dulat, Falko (Institute for Theoretical Physics, ETH Zürich, 8093, Zürich, Switzerland) ; Furlan, Elisabetta (Fermilab, Batavia, IL, 60510, U.S.A.) ; Gehrmann, Thomas (Physik-Institut, Universität Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland) ; Herzog, Franz (Nikhef, Science Park 105, NL-1098 XG, Amsterdam, The Netherlands) (CERN Theory Division, CH-1211, Geneva 23, Switzerland) ; Mistlberger, Bernhard (Institute for Theoretical Physics, ETH Zürich, 8093, Zürich, Switzerland)

23 March 2015

Abstract: In this article, we compute the gluon fusion Higgs boson cross-section at N 3 LO through the second term in the threshold expansion. This calculation constitutes a major milestone towards the full N 3 LO cross section. Our result has the best formal accuracy in the threshold expansion currently available, and includes contributions from collinear regions besides subleading corrections from soft and hard regions, as well as certain logarithmically enhanced contributions for general kinematics. We use our results to perform a critical appraisal of the validity of the threshold approximation at N 3 LO in perturbative QCD.


Published in: JHEP 1503 (2015) 091
Published by: Springer/SISSA
DOI: 10.1007/JHEP03(2015)091
arXiv: 1411.3584
License: CC-BY-4.0



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