Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-11-25
Phys.Rev. C71 (2005) 014317
Physics
Nuclear Physics
Nuclear Theory
26 pages, 4 figures
Scientific paper
10.1103/PhysRevC.71.014317
The scaling functions $f(\psi')$ and $F(y)$ from the $\psi'$- and $y$-scaling analyses of inclusive electron scattering from nuclei are explored within the coherent density fluctuation model (CDFM). In addition to the CDFM formulation in which the local density distribution is used, we introduce a new equivalent formulation of the CDFM based on the one-body nucleon momentum distribution (NMD). Special attention is paid to the different ways in which the excitation energy of the residual system is taken into account in $y$- and $\psi'$-scaling. Both functions, $f(\psi')$ and $F(y)$, are calculated using different NMD's and are compared with the experimental data for a wide range of nuclei. The good description of the data for $y < 0$ and $\psi' < 0$ (including $\psi'< -1$) makes it possible to show the sensitivity of the calculated scaling functions to the peculiarities of the NMD's in different regions of momenta. It is concluded that the existing data on the $\psi'$- and $y$-scaling are informative for the NMD's at momenta not larger than $2.0 \div 2.5$ fm$^{-1}$. The CDFM allows us to study simultaneously on the same footing the role of both basic quantities, the momentum and density distributions, for the description of scaling and superscaling phenomena in nuclei.
Antonov A. N.
de Guerra Moya E.
Gaidarov M. K.
Ivanov Mikhail V.
Kadrev D. N.
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