Status of MRST/MSTW PDF sets

Abstract

We outline the historical development of MRST/MSTW parton distribution functions (PDFs), and clarify how they should be regarded when compared to the most up-to-date 2008 MSTW sets, noting which sets are now obsolete and the reasons why.

To appear in the proceedings of the 17th International Workshop on Deep Inelastic Scattering, Madrid, April 2009. 5 pages, 1 figure