Update of MRST Parton Distributions
R. S. Thorne, A. D. Martin, R. G. Roberts, W. J. Stirling
Abstract
I present a brief summary of the most important updates in the MRST determinations of the NLO and NNLO parton distributions. I concentrate on uncertainties due to input assumptions and possible theoretical corrections, particularly isospin violation, QED corrections, NNLO and corrections at low Q2 and small x.
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