dorsal/arxiv
View SchemaSuperscaling analysis of inclusive electron scattering and its extension to charge-changing neutrino-nucleus cross sections beyond the relativistic Fermi gas approach
| Authors | A. N. Antonov, M. V. Ivanov, M. K. Gaidarov, E. Moya de Guerra, J. A. Caballero, M. B. Barbaro, J. M. Udias, P. Sarriguren |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0609056 |
| URL | https://arxiv.org/abs/nucl-th/0609056 |
| DOI | 10.1103/PhysRevC.74.054603 |
| Journal | Phys.Rev.C74:054603,2006 |
Abstract
Superscaling analyses of inclusive electron scattering from nuclei are extended from the quasielastic processes to the delta excitation region. The calculations of $(e,e^\prime)$ cross sections for the target nucleus $^{12}$C at various incident electron energies are performed using scaling functions $f(\psi^{\prime})$ obtained in approaches going beyond the mean-field approximation, such as the coherent density fluctuation model (CDFM) and the one based on the light-front dynamics (LFD) method. The results are compared with those obtained using the relativistic Fermi gas (RFG) model and the extended RFG model (ERFG). Our method utilizes in an equivalent way both basic nuclear quantities, density and momentum distributions, showing their role for the scaling and superscaling phenomena. The approach is extended to consider scaling function for medium and heavy nuclei with $Z\neq N$ for which the proton and neutron densities are not similar. The asymmetry of the CDFM quasielastic scaling function is introduced, simulating in a phenomenological way the effects which violate the symmetry for $\psi^{\prime}\geq 0$ including the role of the final-state interaction (FSI). The superscaling properties of the electron scattering are used to predict charge-changing neutrino-nucleus cross sections at energies from 1 to 2 GeV. A comparison with the results of the ERFG model is made. The analyses make it possible to gain information about the nucleon correlation effects on both local density and nucleon momentum distributions.
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"abstract": "Superscaling analyses of inclusive electron scattering from nuclei are\nextended from the quasielastic processes to the delta excitation region. The\ncalculations of $(e,e^\\prime)$ cross sections for the target nucleus $^{12}$C\nat various incident electron energies are performed using scaling functions\n$f(\\psi^{\\prime})$ obtained in approaches going beyond the mean-field\napproximation, such as the coherent density fluctuation model (CDFM) and the\none based on the light-front dynamics (LFD) method. The results are compared\nwith those obtained using the relativistic Fermi gas (RFG) model and the\nextended RFG model (ERFG). Our method utilizes in an equivalent way both basic\nnuclear quantities, density and momentum distributions, showing their role for\nthe scaling and superscaling phenomena. The approach is extended to consider\nscaling function for medium and heavy nuclei with $Z\\neq N$ for which the\nproton and neutron densities are not similar. The asymmetry of the CDFM\nquasielastic scaling function is introduced, simulating in a phenomenological\nway the effects which violate the symmetry for $\\psi^{\\prime}\\geq 0$ including\nthe role of the final-state interaction (FSI). The superscaling properties of\nthe electron scattering are used to predict charge-changing neutrino-nucleus\ncross sections at energies from 1 to 2 GeV. A comparison with the results of\nthe ERFG model is made. The analyses make it possible to gain information about\nthe nucleon correlation effects on both local density and nucleon momentum\ndistributions.",
"arxiv_id": "nucl-th/0609056",
"authors": [
"A. N. Antonov",
"M. V. Ivanov",
"M. K. Gaidarov",
"E. Moya de Guerra",
"J. A. Caballero",
"M. B. Barbaro",
"J. M. Udias",
"P. Sarriguren"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.74.054603",
"journal_ref": "Phys.Rev.C74:054603,2006",
"title": "Superscaling analysis of inclusive electron scattering and its extension to charge-changing neutrino-nucleus cross sections beyond the relativistic Fermi gas approach",
"url": "https://arxiv.org/abs/nucl-th/0609056"
},
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