Superscaling of non-quasielastic electron-nucleus scattering

Journal Article · Tue Sep 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.035504· OSTI ID:21293877

Maieron, C ^[1]; Amaro, J E ^[2]; Barbaro, M B ^[3]; Caballero, J A ^[4]; Donnelly, T W; Williamson, C F ^[5]

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1. Dipartimento di Fisica, Universita del Salento and INFN, Sezione di Lecce, Via Arnesano, I-73100 Lecce (Italy)
2. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Granada, E-18071 Granada (Spain)
3. Dipartimento di Fisica Teorica, Universita di Torino and INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino (Italy)
4. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Sevilla, Apdo. 1065, E-41080 Sevilla (Spain)
5. Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

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 {sup 12}C 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.

• OSTI ID: 21293877
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSON-EXCHANGE MODELS
CARBON 12
CROSS SECTIONS
ELECTRONS
FERMI GAS MODEL
NUCLEI
NUCLEONS
QUASI-ELASTIC SCATTERING
RELATIVISTIC RANGE
SCALE INVARIANCE
SCALING