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Type: Journal article
Title: Dynamics of light antiquarks in the proton
Author: Melnitchouk, W.
Speth, J.
Thomas, A.
Citation: Physical Review D, 1998; 59(1):014033
Publisher: American Physical Society
Issue Date: 1998
ISSN: 0556-2821
Statement of
Melnitchouk, W.; Speth, J.; Thomas, A.
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 ū and d̅ 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 πN and πΔ 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.
Rights: ©1998 American Physical Society
RMID: 0030004460
DOI: 10.1103/PhysRevD.59.014033
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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