Delta-isobar relativistic meson exchange currents in quasielastic electron scattering

被引：35

作者：

Amaro, JE ^{[1
]}

Barbaro, MB

Caballero, JA

Donnelly, TW

Molinari, A

机构：

[1] Univ Granada, Dept Fis Moderna, E-18071 Granada, Spain

[2] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy

[3] Univ Sevilla, Dept Fis Atom Mol & Nucl, E-41080 Seville, Spain

[4] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA

[5] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[6] MIT, Dept Phys, Cambridge, MA 02139 USA

[7] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

来源：

NUCLEAR PHYSICS A | 2003年 / 723卷 / 1-2期

关键词：

nuclear reactions; inclusive electron scattering; meson-exchange currents; relativistic fermi gas; Delta-isobar current;

D O I：

10.1016/S0375-9474(03)01269-7

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study the role of the Delta-isobar current on the response functions for high energy inclusive quasielastic electron scattering from nuclei. We consider a general Lagrangian which is compatible with contact invariance and perform a fully relativistic calculation in first-order perturbation theory for one-particle emission. The dependence of the responses upon off-shell parametrizations is analyzed and found to be mild. A discussion of scaling behaviour and a comparison with various non-relativistic approaches are also presented. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：181 / 204

页数：24

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