Scattering of GeV electrons in the framework of the relativistic Hartree approximation

The high momentum transfer electron-nucleus scattering cross section is evaluated within the plane wave impulse approximation (PWIA) supplemented by the relativistic Hartree approximation (RHA). Binding effects on the struck nucleon are introduced through the scalar and vector meson-exchange fields...

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Detalles Bibliográficos
Autores principales: Mariano, Alejandro Edgardo, Barbero, César Alberto, Krmpotić, F.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Física
Electrones
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84646
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84646
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Electrones
spellingShingle Física
Electrones
Mariano, Alejandro Edgardo
Barbero, César Alberto
Krmpotić, F.
Scattering of GeV electrons in the framework of the relativistic Hartree approximation
topic_facet Física
Electrones
description The high momentum transfer electron-nucleus scattering cross section is evaluated within the plane wave impulse approximation (PWIA) supplemented by the relativistic Hartree approximation (RHA). Binding effects on the struck nucleon are introduced through the scalar and vector meson-exchange fields within the framework of quantum hadrodynamics. This model naturally satisfies the current conservation, with the off-shell nucleons behaving as being on the mass shell but having an effective mass. The nucleon inelastic response is included via different parameterizations of the structure function measured at SLAC, while the smearing of the Fermi surface is introduced through a momentum distribution obtained from a perturbative nuclear matter calculation. Recent CEBAF data on inclusive scattering of 4.05 GeV electrons on 56Fe are well reproduced for all measured geometries by the first time. Scaling effects are analyzed as well, and the scaling properties of the nuclear response in terms of the y variable associated to the PWIA within the RHA framework are discussed. The theoretical scaling function obtained in our approach also significantly improves previous PWIA calculations within the multi-GeV electron scattering regime, and describes properly the CEBAF scaling data.
format Articulo
Articulo
author Mariano, Alejandro Edgardo
Barbero, César Alberto
Krmpotić, F.
author_facet Mariano, Alejandro Edgardo
Barbero, César Alberto
Krmpotić, F.
author_sort Mariano, Alejandro Edgardo
title Scattering of GeV electrons in the framework of the relativistic Hartree approximation
title_short Scattering of GeV electrons in the framework of the relativistic Hartree approximation
title_full Scattering of GeV electrons in the framework of the relativistic Hartree approximation
title_fullStr Scattering of GeV electrons in the framework of the relativistic Hartree approximation
title_full_unstemmed Scattering of GeV electrons in the framework of the relativistic Hartree approximation
title_sort scattering of gev electrons in the framework of the relativistic hartree approximation
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/84646
work_keys_str_mv AT marianoalejandroedgardo scatteringofgevelectronsintheframeworkoftherelativistichartreeapproximation
AT barberocesaralberto scatteringofgevelectronsintheframeworkoftherelativistichartreeapproximation
AT krmpoticf scatteringofgevelectronsintheframeworkoftherelativistichartreeapproximation
bdutipo_str Repositorios
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