Dynamics of Light Antiquarks in the Proton

Abstract

We present a comprehensive analysis of the recent data from the E866 experiment at Fermilab on Drell-Yan production in pD and pp collisions, which indicates a non-trivial x-dependence for the asymmetry between u-bar and d-bar quark distributions in the proton. The relatively fast decrease of the asymmetry at large x suggests the important role played by the chiral structure of the nucleon, in particular the pi-N and pi-Delta components of the nucleon wave function. At small x the data require an additional non-chiral component, which may be attributed to the Pauli exclusion principle as first suggested by Field and Feynman.

version to appear in Phys. Rev. D

References in corpus (4)

• Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea
• dbar/ubar Asymmetry and the Origin of the Nucleon Sea
• Mesonic Parton Densities Derived From Constituent Quark Model Constraints
• Nucleon Strange Magnetic Moment and Relativistic Covariance

Cited by in corpus (66)

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• The Spin of the Proton
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• Spin and orbital angular momentum of the proton
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• Testing the Meson Cloud Model in Inclusive Meson Production
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• Reflections on Chiral Symmetry within QCD
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• A Vision of Hadronic Physics
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• A determination of the flavor asymmetric sea quarks in the proton
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