2012

Global parton distributions with nuclear and finite-Q^2 corrections

Owens, J. F., Accardi, A., Melnitchouk, W.

Understand

We present three new sets of next-to-leading order parton distribution functions (PDFs) determined by global fits to a wide variety of data for hard scattering processes.

  • The analysis includes target mass and higher twist corrections needed for the description of deep inelastic scattering data at large x and low Q^2, and nuclear corrections for deuterium targets.
  • The PDF sets correspond to three different models for the nuclear effects, and provide a more realistic uncertainty range for the d quark PDF, in particular, compared with previous fits.
  • We describe the PDF error sets for each choice of the nuclear corrections, and provide a user interface for utilizing the distributions.

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