On the phenomenological analyses of $s$-$\bar{s}$ asymmetry in the nucleon sea

Abstract

Two phenomenological models which give opposite predictions for the $s$-$\bar{s}$ asymmetry in the nucleon sea are re-analyzed carefully. It is pointed out that although the quantitative results in both models depend dramatically on the parameters, the predictions for the shape of $s(x)-\bar{s}(x)$ in the two models are parameter independent and opposite. Thereby the coming experiments are likely to be able to distinguish the two models. We find that the reason for the two models giving opposite predictions is that the fluctuation functions and parametrizations for the strange (anti-strange) quark distribution in the baryon (meson) in the two models are quite different. To further investigate these models, we use the same parametrizations for the strange (anti-strange) distributions of the baryon (meson) in the two models. We find that one of the models depends strongly on the parameter which controls the behavior of the meson-baryon fluctuation function. Also the two models agree on the shape and size of $s$-$\bar{s}$ for some values of the model parameters, but can disagree strongly for others.

RevTex, 11 pages, 7 Postscript figures

References in corpus (1)

• Linking Parton Distributions to Form Factors and Compton Scattering

Cited by in corpus (23)

• What can we learn from global spin alignment of $\varphi$ meson in heavy-ion collisions?
• Perturbative generation of a strange-quark asymmetry in the nucleon
• Novel Phenomenology of Parton Distributions from the Drell-Yan Process
• Flavor Structure of the Nucleon Sea
• Effect of Asymmetric Strange-Antistrange Sea to the NuTeV Anomaly
• The quark - antiquark asymmetry of the strange sea of the nucleon
• Contribution of asymmetric strange-antistrange sea to the Paschos-Wolfenstein relation
• Nonperturbative strange-quark sea from lattice QCD, light-front holography, and meson-baryon fluctuation models
• Form factors and other measures of strangeness in the nucleon
• Charge symmetry violation in the parton distributions of the nucleon
• Sea flavor content of octet baryons and intrinsic five-quark Fock states
• Nonperturbative contribution to the strange-antistrange asymmetry of the nucleon sea
• Strange sea distributions of the nucleon
• Longitudinal polarization of hyperon and anti-hyperon in semi-inclusive deep-inelastic scattering
• Perturbative and nonperturbative contributions to the strange quark asymmetry in the nucleon
• Does the $D^{-}/D^{+}$ production asymmetry decrease at large $x_F$?
• Intrinsic strange distributions in the nucleon from the light-cone models
• The s-s(bar) asymmetry in nucleon and "NuTeV anomaly"
• Properties of JP = 1/2+ baryon octets at low energy
• The flavour asymmetry and quark-antiquark asymmetry in the ${\Sigma }^{+}$-sea
• Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
• Study of the $s-\bar{s}$ asymmetry in the proton
• Determining the strange and antistrange quark distributions of the nucleon