Strange / anti-strange asymmetry in the nucleon sea

Abstract

We analyze the non-perturbative structure of the strange sea of the nucleon within a meson cloud picture. In a low $Q^2$ approach in which the nucleon is viewed as a three valon bound state, we evaluate the probability distribution of an in-nucleon Kaon-Hyperon pair in terms of splitting functions and recombination. The resulting kaon and hyperon probability densities are convoluted with suitable strange distributions inside the meson and baryon in order to obtain non-perturbative contributions to the strange sea of the nucleon. We find a structured strange/anti-strange asymmetry, displaying a clear excess of quarks (anti-quarks) for large (small) momentum fractions

Modified version, several improvements. To appear in Phys. Lett. B

References in corpus (3)

• Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea
• Photoproduction of phi mesons from the proton: Polarization observables and strangeness in the nucleon
• A model for the parton distributions in hadrons

Cited by in corpus (23)

• What can we learn from global spin alignment of $\varphi$ meson in heavy-ion collisions?
• Novel Phenomenology of Parton Distributions from the Drell-Yan Process
• Effect of Asymmetric Strange-Antistrange Sea to the NuTeV Anomaly
• Contribution of asymmetric strange-antistrange sea to the Paschos-Wolfenstein relation
• On the phenomenological analyses of $s$-$\bar{s}$ asymmetry in the nucleon sea
• Next-to-Leading Order Constituent Quark Structure and Hadronic Structure Functions
• The $bard-\bar{u}$ asymmetry of the proton in a Pion Cloud Model approach
• Form factors and other measures of strangeness in the nucleon
• Nonperturbative contribution to the strange-antistrange asymmetry of the nucleon sea
• 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
• Intrinsic strange distributions in the nucleon from the light-cone models
• Physics of the Nucleon Sea Quark Distributions
• Nucleon strange $s\bar{s}$ asymmetry to the $\Lambda /\bar{\Lambda }$ fragmentation
• The s-s(bar) asymmetry in nucleon and "NuTeV anomaly"
• From $D_s^{\pm }$ production asymmetry at the LHC to prompt ${\nu }_{\tau }$ at IceCube
• Pion and kaon parton distribution functions in a meson cloud model
• Strange quark-antiquark asymmetry of nucleon sea from $\Lambda /\bar{\Lambda }$ polarization
• Gluon distributions in nucleons and pions at a low resolution scale
• The small $x$ behavior of the gluon structure function from total cross sections
• On Reconciling Gottfried Sum Rule Violation with Cabibbo Theory
• Low $Q^2$ wave-functions of pions and kaons and their parton distribution functions
• Study of the $s-\bar{s}$ asymmetry in the proton