Partonic structure of proton in the resonance region

TL;DR

This paper investigates the partonic structure of the proton in the resonance region, demonstrating the importance of valence quarks at low Q^2 and discussing quark-hadron duality using Jefferson Lab data.

Contribution

It separates parton distribution contributions from higher twist effects in the resonance region, highlighting the relevance of valence quarks at Q^2 below 1 GeV^2.

Findings

Valence quarks are essential even at Q^2<1 GeV^2

Higher twist corrections can be separated from parton distributions

Quark-hadron duality is examined in the resonance region

Abstract

We separate the contributions of parton distributions from higher twist corrections to the deeply inelastic lepton-proton scattering in the resonance region using the Jefferson Lab data at low $Q^2$. The study indicates that the concept of the valence quarks and their distributions are indispensable even at $Q^2<1GeV^2$. The quark-hadron duality is also discussed.