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Extracting the Weinberg angle at intermediate energies

C. Praet·N. Jachowicz·P. Lava·J. Ryckebusch
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Abstract

A recent experiment by the NuTeV collaboration resulted in a surprisingly high value for the weak mixing angle $\sin^2 θ_W$. The Paschos-Wolfenstein relation, relating neutrino cross sections to the Weinberg angle, is of pivotal importance in the NuTeV analysis. In this work, we investigate the sensitivity of the Paschos-Wolfenstein relation to nuclear structure aspects at neutrino energies in the few GeV range. Neutrino-nucleus cross sections are calculated for $^{16}$O and $^{56}$Fe target nuclei within a relativistic quasi-elastic nucleon-knockout model.

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C. Praet, N. Jachowicz, P. Lava, J. Ryckebusch. 2005-11-29. Extracting the Weinberg angle at intermediate energies. https://doi.org/10.1016/j.ppnp.2005.11.025

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