Extracting the Weinberg angle at intermediate energies

Details Extracting the Weinberg angle at intermediate energies Extracting the Weinberg angle at intermediate energies

2005-11-24

arxiv.org/abs/nucl-th/0511068v2

Prog.Part.Nucl.Phys. 57 (2006) 398-400

Physics

Nuclear Physics

Nuclear Theory

To appear in the proceedings of International School of Nuclear Physics: 27th Course: "Neutrinos in Cosmology, in Astro, Parti

Scientific paper

10.1016/j.ppnp.2005.11.025

A recent experiment by the NuTeV collaboration resulted in a surprisingly high value for the weak mixing angle $\sin^2 \theta_W$. 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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