2016/09/30 by Rong Wang, Xurong Chen, Xu-Rong Chen · 28 citations
Physics and Astronomy · #DGLAP #Distribution function #Gluon #High-Energy Particle Collisions Research #Nonlinear system #Particle physics theoretical and experimental studies #Parton #Quantum Chromodynamics and Particle Interactions #Quark #Scale (ratio) #hep-ph
paper · pdf · doi:10.1088/1674-1137/41/5/053103
published in Chinese Physics C 41(5), 053103 (IOP Publishing) · 14 pages, 13 figures, minor changes, to be published in Chinese Physics C Vol. 41, No. 5 (2017) 053103
openalex created_date 2016/09/23 · arxiv created 2017/03/31 · arxiv updated 2017/04/03 · openalex publication_date 2017/05/01 · openalex updated_date 2026/08/05
Determination of proton parton distribution functions is presented under the dynamical parton model assumption by applying DGLAP equations with GLR-MQ-ZRS corrections. We provide two data sets, referred to as IMParton16, which are from two different nonperturbative inputs. One is the naive input of three valence quarks and the other is the input of three valence quarks with flavor-asymmetric sea components. Basically, both data sets are compatible with the experimental measurements at high scale ( Q 2 > 2 GeV 2 ). Furthermore, our analysis shows that the input with flavor-asymmetric sea components better reproduces the structure functions at high Q 2 . Generally, the parton distribution functions obtained, especially the gluon distribution function, are good options for inputs to simulations of high energy scattering processes. The analysis is performed under the fixed-flavor number scheme for n f = 3, 4, 5. Both data sets start from very low scales, around 0.07 GeV 2 , where the nonperturbative input is directly connected to the simple picture of the quark model. These results may shed some lights on the origin of the parton distributions observed at high Q 2 .