Combined PDF and strong coupling uncertainties at the LHC with NNPDF2.0

Details Combined PDF and strong coupling uncertainties at the LHC with NNPDF2.0 Combined PDF and strong coupling uncertainties at the LHC with NNPDF2.0

2010-05-03

arxiv.org/abs/1005.0397v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, contribution for the proceedings of the conference "Rencontres de Moriond, QCD and High Energy Interaction

Scientific paper

We present predictions for relevant LHC observables obtained with the NNPDF2.0 set. We compute the combined PDFs uncertainties on these observables, and show that combining errors in quadrature yields an excellent approximation to exact error propagation. We then compare the NNPDF2.0 results to the other global PDF fits using a common value of $\alpha_s$. At LHC 7 TeV, reasonable agreement, both in central values and in uncertainties, is found for NNPDF2.0, CTEQ6.6 and MSTW08.

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