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Quark exchange in nuclei and the European Muon Collaboration effect

Journal Article · · Phys. Rev. D; (United States)
;
Quark exchange between nucleons bound in a nucleus can cause a shift in the momentum distribution of quarks relative to free nucleons. This is true even if nucleon properties, including size, remain unchanged in the nuclear environment. This shift in momentum leads to a contribution to the matrix elements of single-quark operators which is nonadditive, and therefore cannot be incorporated into a convolution model. For A = 3 nuclei investigated here, such exchange contributions were found to be important, perhaps even dominant, in calculating the deviation from unity of the ratio of the nuclear structure function to that of the free nucleon (European Muon Collaboration ratio).
Research Organization:
Physics Department, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213
OSTI ID:
6728746
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 35:1; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOUND STATE
COMPOSITE MODELS
DEEP INELASTIC SCATTERING
ELEMENTARY PARTICLES
EMC EFFECT
EVEN-ODD NUCLEI
EXCHANGE INTERACTIONS
FERMIONS
FUNCTIONS
HADRONS
HELIUM 3
HELIUM ISOTOPES
HYDROGEN ISOTOPES
INELASTIC SCATTERING
INTERACTIONS
ISOTOPES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LIGHT NUCLEI
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MATRIX ELEMENTS
NUCLEAR STRUCTURE
NUCLEI
NUCLEON-NUCLEON POTENTIAL
NUCLEONS
ODD-EVEN NUCLEI
PARTICLE INTERACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
POTENTIALS
QUARK MODEL
QUARKS
RADIOISOTOPES
SCATTERING
STABLE ISOTOPES
STRUCTURE FUNCTIONS
THREE-BODY PROBLEM
TRITIUM
YEARS LIVING RADIOISOTOPES