Strangeness in the nucleon and the ratio of proton-to-neutron neutrino-induced quasi-elastic yield

Abstract

The electroweak form factors of the nucleon as obtained within a three flavor pseudoscalar vector meson soliton model are employed to predict the ratio of the proton and neutron yields from ${}^{12}C$, which are induced by quasi-elastic neutrino reactions. These predictions are found to vary only moderately in the parameter space allowed by the model. The antineutrino flux of the up-coming experiment determining this ratio was previously overestimated. The corresponding correction is shown to have only a small effect on the predicted ratio. However, it is found that the experimental result for the ratio crucially depends on an accurate measurement of the energy of the knocked out nucleon.

17 pages, LaTeX, 2 tables, 4 figures, Discussion on shape of strange form factors added, Z. Phys. A, to be published

References in corpus (5)

• The Strangeness Radius and Magnetic Moment of the Nucleon Revisited
• QCD Equalities for Baryon Current Matrix Elements
• Spin Contents of Nucleons with SU(3) Breaking
• Probing Nucleon Strangeness with Neutrinos: Nuclear Model Dependences
• Many-Body Currents and the Strange-Quark Content of 4he

Cited by in corpus (3)

• Strangeness in the nucleon: neutrino-nucleon and polarized electron-nucleon scattering
• The ratio of p and n yields in NC neutrino(antineutrino)-nucleus scattering and strange form factors of the nucleon
• Strange form factors of the proton: a new analysis of the neutrino (antineutrino) data of the BNL-734 experiment