Flavor Structure of the Nucleon Sea

Abstract

The recent progress on our understanding of the flavor structure of unpolarized and polarized nucleon sea is reviewed. The large flavor asymmetry between the up and down sea quark distributions is now well established. This asymmetry strongly suggests the importance of the mesonic degrees of freedom in the description of the nucleon sea. The strong connection between the flavor structure and the spin structure of the nucleon sea is emphasized. Possible future measurements for testing various theoretical models are also discussed.

5pages, 4 figures, Invited talk presented at the QNP2002 conference, Julich, June 2002

References in corpus (12)

• Models for the Polarized Parton Distributions of the Nucleon
• Improved Measurement of the $\bar{d}/\bar{u}$ Asymmetry in the Nucleon Sea
• Prospects for Spin Physics at RHIC
• Precise Measurement of Dimuon Production Cross-Sections in muon neutrino Fe and muon antineutrino Fe Deep Inelastic Scattering at the Tevatron
• Flavor Asymmetry of Light Quarks in the Nucleon Sea
• A statistical approach for polarized parton distributions
• A new global analysis of deep inelastic scattering data
• Polarized light-antiquark distributions in a meson-cloud model
• The flavour asymmetry of polarized anti-quarks in the nucleon
• Do we expect light flavor sea-quark asymmetry also for the spin-dependent distribution functions of the nucleon?
• Hermes and the spin of the proton
• A Constraint on the x Dependence of the Light Antiquarks Ratio

Cited by in corpus (11)

• The Spin Structure of the Nucleon
• Electron-Ion Collider in China
• Distribution Functions of the Nucleon and Pion in the Valence Region
• Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering
• The Polarised Valence Quark Distribution from semi-inclusive DIS
• QCD analysis of polarized DIS and the SIDIS asymmetry world data and light sea-quark decomposition
• Sea flavor content of octet baryons and intrinsic five-quark Fock states
• Determining the helicity structure of the nucleon at the Electron Ion Collider in China
• Valence and sea contributions to the nucleon spin
• Measurement of the longitudinal spin structure of the proton by COMPASS
• Spin Physics at COMPASS