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Density dependence of 2p-2h meson-exchange currents

Opened Access Density dependence of 2p-2h meson-exchange currents

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Autor: Amaro, J. E.
Barbaro, M. B.
Caballero Carretero, Juan Antonio
de Pace, A.
Donnelly, T. W.
Megias, G. D.
Ruiz Simo, I.
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2017-06-12
Publicado en: Physical Review C - Nuclear Physics, 95 (6), 065502-1-065502-7.
Tipo de documento: Artículo
Resumen: We analyze the density dependence of the contribution of meson-exchange currents to the lepton-nucleus inclusive cross section in the two-particle two-hole channel. The model is based on the relativistic Fermi gas, where each nucleus is characterized by its Fermi momentum kF. We find that the 2p-2h nuclear response functions at their peaks scale as AkF2 for Fermi momentum going from 200 to 300 MeV/c and momentum transfer q from 2kF to 2 GeV/c. This behavior is different from what is found for the quasielastic response, which scales as A/kF. Additionally, the deep scaling region is also discussed and there the usual scaling behavior is found to be preferable.
Cita: Amaro, J.E., Barbaro, M.B., Caballero Carretero, J.A., de Pace, A., Donnelly, T.W., Megias, G.D. y Ruiz Simo, I. (2017). Density dependence of 2p-2h meson-exchange currents. Physical Review C - Nuclear Physics, 95 (6), 065502-1-065502-7.
Tamaño: 641.9Kb
Formato: PDF

URI: http://hdl.handle.net/11441/64197

DOI: 10.1103/PhysRevC.95.065502

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