A determination of the flavor asymmetric sea quarks in the proton

Abstract

Using DGLAP evolution equation with the corrections of parton recombinations, the flavor asymmetric sea quark distributions in the proton are first extracted from the available experimental data with the global QCD analysis method. Comparisons of our predictions to the CTEQ, MRS, and GRV parton distribution functions for sea quarks are presented. Based on the separation of the flavor symmetric and asymmetric sea, the possible relations between strange quark distribution and symmetric light quark distribution are discussed. The results are used to explain the recent HERMES result of the strange quark distribution.

17 pages, 17 figures, Final version to be published in EPJ plus

References in corpus (5)

• Parton distributions for the LHC
• Determination of the strange quark density of the proton from ATLAS measurements of the W->l nu and Z->ll cross sections
• Measurement of Parton Distributions of Strange Quarks in the Nucleon from Charged-Kaon Production in Deep-Inelastic Scattering on the Deuteron
• Reevaluation of the parton distribution of strange quarks in the nucleon
• On the Momentum Dependence of the Flavor Structure of the Nucleon Sea