May 18 – 22, 2009
Sitges (Barcelona) Spain
Europe/Madrid timezone

Global Fits for PDFs at Large-x

May 21, 2009, 11:00 AM
25m
Sitges (Barcelona) Spain

Sitges (Barcelona) Spain

Palau Maricel Sitges (Barcelona) Spain
Talk Shallow to deep inelastic scattering Shallow to deep inelastic scattering I

Speaker

Joseph Owens (Florida State University)

Description

Current global fits used to determine parton distribution functions (PDFs) are typically limited to the region of x below about 0.7. In order to extend the range of such fits one, encounters kinematic regions where target mass corrections and higher twist contributions become relevant. Furthermore, Fermi motion corrections for deuterium targets also become significant in this region. I will describe recent global fits which include new treatments of all three of these effects, thereby allowing the x range of the fits to be extended. I will discuss the stability of the resulting PDFs to various choices for the target mass corrections as well as the effects on the PDF errors resulting from the additional data sets used in the fits.

Primary author

Joseph Owens (Florida State University)

Co-authors

Alberto Accardi (Jefferson Lab) Cynthia Keppel (Hampton University and Jefferson Lab) Eric Christy (Jefferson Lab) Jorge Morfin (Fermilab) Peter Monaghan (Jefferson Lab) Wally Melnitchouk (Jefferson Lab)

Presentation materials