Journal
PHYSICAL REVIEW D
Volume 105, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.105.074022
Keywords
-
Funding
- U.S. Department of Energy (DOE) [DE-AC05-06OR23177]
- DOE, Office of Science, Office of Nuclear Physics in the Early Career Program
- Guangdong Major Project of Basic and Applied Basic Research [2020B0301030008]
- National Natural Science Foundation of China [12022512, 12035007]
Ask authors/readers for more resources
In this study, the first simultaneous global QCD analysis of spin-averaged and spin-dependent parton distribution functions (PDFs) was performed, including single jet production data from unpolarized and polarized hadron collisions. The impact of SU(3) flavor symmetry and PDF positivity assumptions on the quark and gluon helicity PDFs was critically assessed, revealing significant bias on gluon polarization. The simultaneous analysis enables the extraction of individual helicity-aligned and antialigned PDFs with consistent treatment of uncertainties.
We perform the first simultaneous global QCD analysis of spin-averaged and spin-dependent parton distribution functions (PDFs), including single jet production data from unpolarized and polarized hadron collisions. We critically assess the impact of SU(3) flavor symmetry and PDF positivity assumptions on the quark and gluon helicity PDFs, and find strong bias from these, particularly on the gluon polarization. The simultaneous analysis allows for the first time extraction of individual helicity-aligned and antialigned PDFs with a consistent treatment of uncertainties.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
