The European Physical Journal C

, Volume 63, Issue 2, pp 189–285

Parton distributions for the LHC

  • A. D. Martin
  • W. J. Stirling
  • R. S. Thorne
  • G. Watt
Regular Article - Theoretical Physics

DOI: 10.1140/epjc/s10052-009-1072-5

Cite this article as:
Martin, A.D., Stirling, W.J., Thorne, R.S. et al. Eur. Phys. J. C (2009) 63: 189. doi:10.1140/epjc/s10052-009-1072-5

Abstract

We present updated leading-order, next-to-leading order and next-to-next-to-leading order parton distribution functions (“MSTW 2008”) determined from global analysis of hard-scattering data within the standard framework of leading-twist fixed-order collinear factorisation in the \(\overline{\mathrm{MS}}\) scheme. These parton distributions supersede the previously available “MRST” sets and should be used for the first LHC data taking and for the associated theoretical calculations. New data sets fitted include CCFR/NuTeV dimuon cross sections, which constrain the strange-quark and -antiquark distributions, and Tevatron Run II data on inclusive jet production, the lepton charge asymmetry from W decays and the Z rapidity distribution. Uncertainties are propagated from the experimental errors on the fitted data points using a new dynamic procedure for each eigenvector of the covariance matrix. We discuss the major changes compared to previous MRST fits, briefly compare to parton distributions obtained by other fitting groups, and give predictions for the W and Z total cross sections at the Tevatron and LHC.

Copyright information

© Springer-Verlag / Società Italiana di Fisica 2009

Authors and Affiliations

  • A. D. Martin
    • 1
  • W. J. Stirling
    • 2
  • R. S. Thorne
    • 3
  • G. Watt
    • 3
  1. 1.Institute for Particle Physics PhenomenologyUniversity of DurhamDurhamUK
  2. 2.Cavendish LaboratoryUniversity of CambridgeCambridgeUK
  3. 3.Department of Physics and AstronomyUniversity College LondonLondonUK