Quark-exchange contribution to the European Muon Collaboration effect in nuclear matter

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.498· OSTI ID:7057306

Arifuzzaman,; Hasan, S H; Hoodbhoy, P

Fermi statistics require that all quarks in a nucleus be antisymmetrized, and hence that quarks belonging to different nucleons be exchanged in proportion to the degree of nucleon overlap. This leads to a shift in the distribution of quark momentum relative to that in isolated nucleons, and hence to a shift in the structure function F/sub 2/(x). This paper extends previous work on the European Muon Collaboration (EMC) effect for the trinucleon system to systems with large numbers of nucleons. For large N, certain divergences were encountered and traced to contributions arising from unlinked quark clusters. After renormalization a smooth N..-->..infinity limit was obtained. The conclusion derived in the previously considered N = 3 case is upheld: Quark exchange is very important: perhaps even dominant: in calculating the deviation away from unity of the ratio of the nuclear structure function to that of a free nucleon.

• Research Organization: Department of Physics, Quaid-i-Azam University, Islamabad, Pakistan
• OSTI ID: 7057306
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653002* -- Nuclear Theory-- Nuclear Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
CLUSTER MODEL
COMPOSITE MODELS
EMC EFFECT
FERMI STATISTICS
FIELD THEORIES
FLAVOR MODEL
FUNCTIONS
LEPTON REACTIONS
MATHEMATICAL MODELS
MATTER
MUON REACTIONS
NUCLEAR MATTER
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
PARTICLE MODELS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MATTER
QUARK MODEL
RENORMALIZATION
STRUCTURE FUNCTIONS