QCD analysis of non-singlet neutrino structure functions

Abstract

We present a systematic analysis of all available neutrinoxF 3 data, using an analytic parametrisation which incorporates second order QCD predictions forQ 2 evolution. We find $$\Lambda _{\overline {MS} } = 0.30 \pm 0.13{\rm{ }}GeV$$ where the error is statistical, and both Fermi andW-boson propagator corrections have been made to the data. Neglect of the former has negligible effects, but neglect of the latter would increase Λ by ∼0.1 GeV. We find that higher-twist effects are small and negative, and estimate their effect on the determination of Λ. We are unable to fit the data with higher-twist terms alone.