Higher Twist, ${\xi }_w$ Scaling, and Effective $LOPDFs$ for Lepton Scattering in the Few GeV Region

Abstract

We use a new scaling variable ${\xi }_w$, and add low $Q^2$ modifications to GRV98 leading order parton distribution functions such that they can be used to model electron, muon and neutrino inelastic scattering cross sections (and also photoproduction) at both very low and high energies.

arXiv comment6 pages, 3 figures. To be published in J. Phys. G (Conf. Proceedings) based on two talks by Arie Bodek at the NuFact${}^{\prime }02$ conference, Imperial College, London, England, July 2002

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