Higgs production in gluon fusion at next-to-next-to-leading order QCD for finite top mass

Robert V. Harlander; Hendrik Mantler; Simone Marzani; Kemal J. Ozeren

doi:10.1140/epjc/s10052-010-1258-x

EPJ

Higgs production in gluon fusion at next-to-next-to-leading order QCD for finite top mass

Robert V. Harlander¹^*, Hendrik Mantler¹, Simone Marzani² and Kemal J. Ozeren¹

¹ Fachbereich C, Bergische Universität Wuppertal, 42097, Wuppertal, Germany
² School of Physics & Astronomy, University of Manchester, Manchester, M13 9PL, UK

Received: 14 December 2009
Published online: 19 February 2010

Abstract

The inclusive Higgs production cross section from gluon fusion is calculated through NNLO QCD, including its top quark mass dependence. This is achieved through a matching of the 1/M _t expansion of the partonic cross sections to the exact large-

limits which are derived from k _T-factorization. The accuracy of this procedure is estimated to be better than 1% for the hadronic cross section. The final result is shown to be within 1% of the commonly used effective theory approach, thus confirming earlier findings.