On the Impact of NMC Data on NLO and NNLO Parton Distributions and Higgs Production at the Tevatron and the LHC

Abstract

We discuss the impact of the treatment of NMC structure function data on parton distributions in the context of the NNPDF2.1 global PDF determination at NLO and NNLO. We show that the way these data are treated, and even their complete removal, has no effect on parton distributions at NLO, and at NNLO has an effect which is below one sigma. In particular, the Higgs production cross-section in the gluon fusion channel is very stable.

12 pages, 8 figures. Discussion extended to NNLO, and paper accordingly rewritten altogether. Several further small improvements, including new comparison plots to SLAC and NMC data

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• Impact of Heavy Quark Masses on Parton Distributions and LHC Phenomenology
• The PDF4LHC Working Group Interim Report
• Precision determination of electroweak parameters and the strange content of the proton from neutrino deep-inelastic scattering
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Cited by in corpus (12)

• PDF4LHC recommendations for LHC Run II
• The CT10 NNLO Global Analysis of QCD
• The Path to Proton Structure at One-Percent Accuracy
• Parton distribution functions and benchmark cross sections at NNLO
• Quantitative constraints on the gluon distribution function in the proton from collider isolated-photon data
• World Summary of ${\alpha }_s$ (2012)
• PDF dependence of Higgs cross sections at the Tevatron and LHC: response to recent criticism
• Strange Quark PDFs and Implications for Drell-Yan Boson Production at the LHC
• The role of the input scale in parton distribution analyses
• MSTW PDFs and impact of PDFs on cross sections at Tevatron and LHC
• Electroweak and Higgs Measurements Using Tau Final States with the LHCb Detector
• The NNPDF2.2 Parton Set