Nuclear medium modification of nucleons via a Bethe ansatz model

• Type: Article in International Scientific Journal
• Date: 1991

Authors

Villate, JE (Author) Other; Koltun, DS (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: Physical Review C

Vol. 43

Pages: 1967-1980

ISSN: 0556-2813

Indexing

Scopus - 1 Citation

Other information

Authenticus ID: P-00Q-RWC

DOI: 10.1103/physrevc.43.1967

Resumo (PT): The modification of the internal structure of nucleons inside the nucleus in investigated within the context of a constituent quark model, in which quarks interact forming bound clusters that act as nucleons. The elastic form factor, the momentum distribution, the correlation function and the Coulomb sum rule are calculated. The contribution to these structure functions arising from nucleon degrees of freedom is identified by means of an impulse approximation, in which the quark structure of nucleons is assumed to be unaffected by other nucleons, and the dynamics of nucleons is given by an effective theory, extracted from our quark model. The effect of the modification of the nucleon is found to be noticeable on the elastic form factor at large momentum transfer, and on the Coulomb sum rule. A cluster approximation is also used to study the extent to which these effects are due to exchange of quarks.

Abstract (EN): The modification of the internal structure of nucleons inside the nucleus is investigated within the context of a constituent quark model, in which quarks interact forming bound clusters that act as nucleons. The elastic form factor, the momentum distribution, the correlation function, and the Coulomb sum rule are calculated. The contribution to these structure functions arising from nucleon degrees of freedom is identified by means of an impulse approximation, in which the quark structure of nucleons is assumed to be unaffected by other nucleons, and the dynamics of nucleons is given by an effective theory, extracted from our quark model. The effect of the modification of the nucleon is found to be noticeable on the elastic form factor at large momentum transfer, and on the Coulomb sum rule. A cluster approximation is also used to study the extent to which these effects are due to exchange of quarks. © 1991 The American Physical Society.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14