期刊
PHYSICAL REVIEW D
卷 93, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.93.085037
关键词
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资金
- DOE [DE-FG02-13ER41942]
- Research Executive Agency of the European Union [PITN-GA-2010-264564]
- U.S. Department of Energy [DE-FG02-13ER41996]
- Projet International de Cooperation Scientifique [PICS05854]
- Fermi Research Alliance, LLC [DE-AC02-07CH11359]
- United States Department of Energy
We present the new nCTEQ15 set of nuclear parton distribution functions (PDFs) with uncertainties. This fit extends the CTEQ proton PDFs to include the nuclear dependence using data on nuclei all the way up to Pb-208. The uncertainties are determined using the Hessian method with an optimal rescaling of the eigenvectors to accurately represent the uncertainties for the chosen tolerance criteria. In addition to the deep inelastic scattering and Drell-Yan processes, we also include inclusive pion production data from the Relativistic Heavy Ion Collider to help constrain the nuclear gluon PDF. Furthermore, we investigate the correlation of the data sets with specific nuclear PDF flavor components and asses the impact of individual experiments. We also provide comparisons of the nCTEQ15 set with recent fits from other groups.
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