Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.32: Poster

Thursday, March 19, 2009, 14:00–16:00, Audi-Max

Superscaling predictions for quasielastic neutrino-nucleus scattering — •Cristina Martinez — Nuclear Physics Department, Complutense University of Madrid

The possibility of applying superscaling ideas to predict neutral-current (NC) quasielastic (QE) neutrino cross sections for beams of a few GeV is investigated. Results obtained within the relativistic impulse approximation (RIA) using the same relativistic mean field potential (RMF) for both initial and final nucleons — a model that has been capable of reproducing the experimental (e,e′) scaling function — are used to illustrate the ideas involved. While NC reactions, where the final neutrino is not detected, are apparently not well suited for scaling analyses, to a large extent the predictions of the RIA-RMF model do exhibit superscaling. Independence of the scaled response on the nuclear species is very well fulfilled. The RIA-RMF NC superscaling function is in good agreement with the one obtained using (e,e′) data. Guided by the results for the RIA-RMF, the idea that electroweak processes on nuclei can be described with a universal scaling function, provided that some mild restrictions on the kinematics of the NC reactions are assumed, is shown to be a good one.