Superscaling of non-quasielastic electron-nucleus scattering

被引：34

作者：

Maieron, C. ^{[1
,2
]}

Amaro, J. E. ^{[3
]}

Barbaro, M. B. ^{[4
,5
]}

Caballero, J. A. ^{[6
]}

Donnelly, T. W. ^{[7
,8
]}

Williamson, C. F. ^{[7
,8
]}

机构：

[1] Univ Salento, Dipartimento Fis, I-73100 Lecce, Italy

[2] Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy

[3] Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain

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

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

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

[7] MIT, Ctr Theoret Phys, Nucl Sci Lab, Cambridge, MA 02139 USA

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

来源：

PHYSICAL REVIEW C | 2009年 / 80卷 / 03期

关键词：

LEPTON SCATTERING; EXCHANGE CURRENTS;

D O I：

10.1103/PhysRevC.80.035504

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：

The present study focuses on the superscaling behavior of electron-nucleus cross sections in the region lying above the quasielastic peak, especially the region dominated by electroexcitation of the Delta. Non-quasielastic cross sections are obtained from all available high-quality data for C-12 by subtracting effective quasielastic cross sections based on the superscaling hypothesis. These residuals are then compared with results obtained within a scaling-based extension of the relativistic Fermi gas model, including an investigation of violations of scaling of the first kind in the region above the quasielastic peak. A way to potentially isolate effects related to meson-exchange currents by subtracting both impulsive quasielastic and impulsive inelastic contributions from the experimental cross sections is also presented.

引用

页数：16

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