Systematics of Deuteron Smearing Corrections in Global PDF fits
Abstract
Use of DIS data on light A=2,3 nucleus targets for up and down quark flavor separation at large x crucially depends on the theoretical treatment of nuclear effects such as binding and Fermi motion, and off-shell deformation of the quark and gluon structure of bound nucleons. The amount and precision of available data from JLab 6 and, increasingly, from the JLab 12 experimental programs require a correspondingly precise treatment of nuclear corrections. In this talk, I will discuss recent work that scrutinizes systematic uncertainties in the so-called nuclear smearing, and its applications to global QCD fits of parton distribution functions at large x values.
Based on work supported in part by the U.S. Department of Energy under contracts DE-SC0008791 and DE-AC05-06OR23177.- Publication:
-
APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- 2020
- Bibcode:
- 2020APS..DNP.LL004A