Nucleon structure effect on the longitudinal response function

Details Nucleon structure effect on the longitudinal response function Nucleon structure effect on the longitudinal response function

2000-05-15

arxiv.org/abs/nucl-th/0005038v1

Nucl.Phys. A680 (2000) 246-248

Physics

Nuclear Physics

Nuclear Theory

4 pages with 2 ps files, talk at "Int. Conference on Quark Nuclear Physics", Adelaide, Australia, 21 - 25 Feb. 2000, to be pub

Scientific paper

10.1016/S0375-9474(00)00421-8

Using the quark-meson coupling model, we study the longitudinal response function for quasielastic electron scattering from nuclear matter within relativistic RPA. In QMC the coupling constant between the scalar meson and the nucleon is expected to decrease with increasing nuclear density. Furthermore, since the electromagnetic form factors of the in-medium nucleon are modified at the same time, the longitudinal response function and the Coulomb sum are reduced by a total of about 20% in comparison with the Hartree contribution.

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