The PDF4LHC Working Group Interim Recommendations
  This note provides an interim summary of the current recommendations of the PDF4LHC working group for the use of parton distribution functions (PDFs) and of PDF uncertainties at the LHC, for cross section and cross section uncertainty calculations. It also contains a succinct user guide to the computation of PDF uncertainties and correlations using available PDF sets.   A companion note (the PDF4LHC Working Group Interim Report) summarizes predictions for benchmark cross sections at the LHC (7 TeV) at NLO using modern PDFs currently available from 6 PDF fitting groups. 
Michiel Botje, Jon Butterworth, Amanda Cooper-Sarkar, Albert de Roeck,   Joel Feltesse, Stefano Forte, Alexander Glazov, Joe...
hep-ph hep-ex