Published April 1, 1992 | Version v1
Journal article Metadata-only

Flavor asymmetry in the light-quark sea of the nucleon

Creators

  • 1. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)
  • 2. Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)

Description

Parton distributions with an excess of down quarks over up quarks in the sea can reproduce data on the structure functions F2μp, F2μn, and xscrF3νN. A model calculation in chiral field theory shows how an up-down asymmetry can arise from the dissociation of a quark into a quark plus a pion within the nucleon. This effect is large enough to account for the Gottfried-sum-rule defect reported by the New Muon Collaboration. Similar calculations may advance the understanding of other quasistatic properties of hadrons

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
45
Journal Issue
7
Journal Page Range
p. 2269-2275.
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
24020289
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ASYMMETRY; CHIRAL SYMMETRY; DEUTERONS; DISTRIBUTION FUNCTIONS; FLAVOR MODEL; ISOSPIN; NUCLEONS; PARTON MODEL; PAULI PRINCIPLE; PIONS; QUANTUM CHROMODYNAMICS; QUARK MATTER; STRUCTURE FUNCTIONS; SUM RULES
Descriptors DEC
BARYONS; BOSONS; CHARGED PARTICLES; COMPOSITE MODELS; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; FIELD THEORIES; FUNCTIONS; HADRONS; MATHEMATICAL MODELS; MATTER; MESONS; PARTICLE MODELS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARK MODEL; SYMMETRY