Approximate N<SUP>3</SUP>LO Higgs-boson production cross section using physical-kernel constraints

de Florian, D, Mazzitelli, J, Moch, S and Vogt, A (2014) Approximate N<SUP>3</SUP>LO Higgs-boson production cross section using physical-kernel constraints. JOURNAL OF HIGH ENERGY PHYSICS, 2014 (10). pp. 1-28.

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Abstract

The single-logarithmic enhancement of the physical kernel for Higgs production by gluon-gluon fusion in the heavy top-quark limit is employed to derive the leading so far unknown contributions, ln^{5,4,3}(1-z), to the N^3LO coefficient function in the threshold expansion. Also using knowledge from Higgs-exchange DIS to estimate the remaining terms not vanishing for z = m_H^2/s^hat -> 1, these results are combined with the recently completed soft + virtual contributions to provide an uncertainty band for the complete N^3LO correction. For the 2008 MSTW parton distributions these N^3LO contributions increase the cross section at 14 TeV by (10 +- 2)% and (3 +- 2.5)% for the standard choices mu_R = m_H and mu_R = m_H/2 of the renormalization scale. The remaining uncertainty arising from the hard-scattering cross sections can be quantified as no more than 5%, which is smaller than that due to the strong coupling and the parton distributions.

Item Type:	Article
Additional Information:	24 pages, 6 figures. arXiv-dysfunctional LaTeX macro for beta_0 replaced. Minor text changes with 3 new references. Version to appear in JHEP
Uncontrolled Keywords:	Higgs Physics, QCD
Depositing User:	Symplectic Admin
Date Deposited:	10 Oct 2017 13:35
Last Modified:	05 Oct 2023 09:26
DOI:	10.1007/JHEP10(2014)176
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3009935