Theoretical aspects of the CEBAF 89-009 experiment on inclusive scattering of 4.05 GeV electrons from nuclei
We compare recent CEBAF data on inclusive electron scattering of 4.05 GeV electrons on nuclei with predictions, based on a relation between structure functions (SF) of a nucleus, a nucleon, and a nucleus of point nucleons. The latter contains nuclear dynamics, e.g., binary collision contributions in addition to the asymptotic limit. The agreement with data is good, except in low-intensity regions. Computed ternary collision contributions appear too small for an explanation. We perform scaling analyses in Gurvitz's scaling variable and find that for y{sub G} {gt_or_lt} 0, ratios of scaling functions for pairs of nuclei differ by less than 15-20% from 1. Scaling functions for (y{sub G} < 0) are, for increasing Q{sup 2}, shown to approach a plateau from above. We observe only weak Q{sup 2} dependence in final-state interactions (FSI), which in the relevant kinematic region is ascribed to the diffractive nature of NN amplitudes appearing in FSI. This renders it difficult to separate asymptotic from FSI parts and seriously hampers the extraction of n(p) from scaling analyses in a model-independent fashion.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 834861
- Report Number(s):
- JLAB-PHY-99-62; DOE/ER/40150-3006; nucl-th/9904028; TRN: US0407361
- Journal Information:
- Physical Review C, Vol. 60; Other Information: Physical Review C, Volume 60, Page(s) 044601; PBD: 1 Oct 1999
- Country of Publication:
- United States
- Language:
- English
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