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MRST partons and uncertainties

A. D. Martin, R. G. Roberts, W. J. Stirling, R. S. Thorne

Abstract

We discuss uncertainties in the extraction of parton distributions from global analyses of DIS and related data. We present conservative sets of partons, at both NLO and NNLO, which are stable to x,Q^2,W^2 cuts on the data. We give the corresponding values of alpha(M_Z^2) and the cross sections for W production at the Tevatron.

MRST partons and uncertainties

Abstract

We discuss uncertainties in the extraction of parton distributions from global analyses of DIS and related data. We present conservative sets of partons, at both NLO and NNLO, which are stable to x,Q^2,W^2 cuts on the data. We give the corresponding values of alpha(M_Z^2) and the cross sections for W production at the Tevatron.

Paper Structure

This paper contains 2 figures, 2 tables.

Figures (2)

  • Figure 1: The conservative partons compared to MRST2002 MRST2002.
  • Figure 2: Predictions for $W$ production at the Tevatron, $\sqrt s = 1.96$ TeV, for various values of $x_{\rm cut}$, and for the conservative sets of partons (shown by the open symbols).