Origin of the violation of the Gottfried sum rule

Journal Article · Sat Aug 01 04:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.1198· OSTI ID:7183638

Hwang, W P ^[1]; Speth, J ^[2]

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1. Department of Physics, National Taiwan University, Taipei, Taiwan 10764 (Taiwan, Province of China) Institut fuer Kernphysik der Kernforschungsanlage Juelich, D-5170 Juelich (Germany)
2. Institut fuer Kernphysik der Kernforschungsanlage Juelich, D-5170 Juelich (Germany)

Using generalized Sullivan processes to generate sea-quark distributions of a nucleon at {ital Q}{sup 2}=4 GeV{sup 2}, we find that the recent finding by the New Muon Collaboration on the violation of the Gottfried sum rule can be understood quantitatively, including the shape of {ital F}{sub 2}{sup {ital p}}({ital x}){minus}{ital F}{sub 2}{sup {ital n}}({ital x}) as a function of {ital x}. The agreement may be seen as a clear evidence toward the validity of a recent suggestion of Hwang, Speth, and Brown that the sea distributions of a hadron, at low and moderate {ital Q}{sup 2} (at least up to a few GeV{sup 2}), may be attributed primarily to generalized Sullivan processes.

• OSTI ID: 7183638
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:3; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662410* -- Properties of Baryons & Baryon Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
HADRONS
ISOSPIN
MATHEMATICAL MODELS
MATTER
NUCLEONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTON MODEL
PROTONS
QUARK MATTER
QUARK MODEL
SUM RULES
SYMMETRY