General study of superscaling in quasielastic (e,e^') and (,µ) reactions using the relativistic impulse approximation

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J. A. Caballero
Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, E-41080 Sevilla, Spain

Received 28 March 2006; published 21 July 2006

Thephenomenon of superscaling for quasielastic lepton induced reactions at energiesof a few GeV is investigated within the framework ofthe relativistic impulse approximation. A global analysis of quasielastic inclusiveelectron and charged-current neutrino scattering reactions on nuclei is presented.Scaling and superscaling properties are shown to emerge from bothtypes of processes. The crucial role played by final stateinteractions is evaluated by using different approaches. The asymmetric shapepresented by the experimental scaling function, with a long tailin the region of positive values of the scaling variable,is reproduced when the interaction in the final state betweenthe knockout nucleon and the residual nucleus is described withinthe relativistic mean field approach. The impact of gauge ambiguitiesand off-shell effects in the scaling function is also analyzed.

URL:	http://link.aps.org/doi/10.1103/PhysRevC.74.015502
DOI:	10.1103/PhysRevC.74.015502
PACS:	25.30.Pt; 23.40.Bw; 24.10.Jv; 25.30.Fj 25.30.Pt Nuclear neutrino scattering 23.40.Bw Weak-interaction and lepton (including neutrino) aspects of decay 24.10.Jv Relativistic models of nuclei 25.30.Fj Nuclear inelastic electron scattering to continuum YEAR: 2006

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