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

Journal Article · Wed May 01 00:00:00 EDT 2013 · Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRevD.87.094012· OSTI ID:1079209

Owens, J. F. ^[1]; Accardi, Alberto ^[2]; Melnitchouk, Wally ^[3]

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1. Florida State U.
2. Hampton U., JLAB
3. JLAB

We present three new sets of 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.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1079209
• Report Number(s): JLAB-THY-13-5; DOE/OR/23177-2398; arXiv:1212.1702
• Journal Information: Phys. Rev. D, Vol. 87, Issue 09
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS