Intrinsic strange distributions in the nucleon from the light-cone models

Abstract

Precise knowledge of the strange and antistrange quark distributions of the nucleon is a major step toward better understanding of the strong interaction and the nucleon structure. Moreover, the $s-\bar{s}$ asymmetry in the nucleon plays an important role in some physical processes involving hadrons. The goal of this paper is the study of intrinsic strange contribution to the strange sea of the nucleon. To this aim, we calculate the intrinsic strange distributions from the various light-cone models including BHPS, scalar five-quark and meson-baryon models and then compare their results. These models can lead to the rather different distributions for the intrinsic strange that are dominated in different values of $x$. Furthermore, the meson-baryon model leads to the $s-\bar{s}$ asymmetry that can be comparable in some situations to the result obtained from the global analysis of PDFs. We also present a simple parametrization for each model prediction of intrinsic strange distribution.

8 pages, 5 figures

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Cited by in corpus (8)

• Study of spin-dependent structure functions of ${}^3\mathrm{He}$ and ${}^3\mathrm{H}$ at NNLO approximation and corresponding nuclear corrections
• Nonperturbative contribution to the strange-antistrange asymmetry of the nucleon sea
• Phenomenology of leading nucleon production in $ep$ collisions at HERA in the framework of fracture functions
• Improved determination of $\bar{d}(x)-\bar{u}(x)$ flavor asymmetry in the proton by BONuS experiment at JLAB and using an approach by Brodsky, Hoyer, Peterson, and Sakai
• The impact of intrinsic charm on the parton distribution functions
• Study of the $s-\bar{s}$ asymmetry in the proton
• Estimating proton radius and proportion of other non-perturbative components in the proton by the Maximum Entropy Method
• Improved determination of strange distribution function from the global analysis using BHPS model