Theoretical aspects of the CEBAF 89-009 experiment on inclusive scattering of 4.05 GeV electrons from nuclei

Abstract

We compare recent CEBAF data on inclusive electron scattering 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 the data is good, except in low-intensity regions. Computed ternary collsion contributions appear too small for an explanation. We perform scaling analyses in Gurvitz's scaling variable and found that for $y_G\gtrless 0$, ratios of scaling functions for pairs of nuclei differ by less than 15-20% from 1. Scaling functions for $<y_G>0$ are, for increasing $Q^2$, shown to approach a plateau from above. We observe only weak $Q^2$-dependence in FSI, which in the relevant kinematic region is ascribed to the diffractive nature of the 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-independnent fashion.

11 p. Latex file, 2 ps figs

References in corpus (6)

• Superscaling in inclusive electron-nucleus scattering
• Inclusive Electron-Nucleus Scattering at Large Momentum Transfer
• Relativistic y-scaling and the Coulomb sum rule in nuclei
• Predictions for the 4 GeV TJNAF inclusive electron scattering experiment and for FSI effects in EMC ratios
• Beyond the binary collision approximation for the large-$q$ response of liquid ${}^4$He
• On the equivalence of the Impulse Approximation and the Gersch-Rodriguez-Smith theory for structure functions

Cited by in corpus (12)

• GRS computation of deep inelastic electron scattering on 4He
• Extraction of the n structure function $F_2^n$ from inclusive scattering data on composite nuclei
• Relativistic approaches to structure functions of nuclei
• R-ratios and moments of nuclear structure functions
• The neutron magnetic form factor G_M^n(Q^2) from Quasi-Elastic inclusive scattering data on D and 4He
• A simple qualitative description of EMC ratios μ^A for 0.2 <~ x <~ 1.5 and some sample calculations
• Description of inclusive scattering of 4.045 GeV electrons from D
• On Distribution Functions for Partons in Nuclei
• A new Fermi smearing approach for scattering of multi-GeV electrons by nuclei
• Inclusive scattering data on light nuclei as a precision tool for the extraction of G_M^n
• On the relation between nuclear and nucleon Structure Functions and their moments
• Tortuous ways to the extraction of neutron observables from inclusive lepton scattering