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.
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)
