Resonance Region Structure Functions and Parity Violating Deep Inelastic Scattering

Abstract

The primary motive of parity violating deep inelastic scattering experiments has been to test the standard model, particularly the axial couplings to the quarks, in the scaling region. The measurements can also test for the validity of models for the off-diagonal structure functions $F_{1,2,3}^{\gamma Z}(x,Q^2)$ in the resonance region. The off-diagonal structure functions are important for the accurate calculation of the $\gamma Z$-box correction to the weak charge of the proton. Currently, with no data to determine $F_{1,2,3}^{\gamma Z}(x,Q^2)$ directly, models are constructed by modifying existing fits to electromagnetic data. We present the asymmetry value for deuteron and proton target predicted by several different $F_{1,2,3}^{\gamma Z}(x,Q^2)$ models, and demonstrate that there are notable disagreements.

6 pages, 3 figures. New version contains additional descriptions of competing structure function models

References in corpus (7)

• Electromagnetic Excitation of Nucleon Resonances
• Resonance production by neutrinos: The second resonance region
• Measurement of Strange Quark Contributions to the Vector Form Factors of the Proton at Q**2=0.22 (GeV/c)**2
• Empirical Fit to Inelastic Electron-Deuteron and Electron-Neutron Resonance Region Transverse Cross Sections
• Model-dependence of the $\gamma Z$ dispersion correction to the parity-violating asymmetry in elastic $ep$ scattering
• New formulation of gamma-Z box corrections to the weak charge of the proton
• Gamma-Z box contributions to parity violating elastic e-p scattering

Cited by in corpus (5)

• Reduced hadronic uncertainty in the determination of $V_{ud}$
• Dispersive Evaluation of the Inner Radiative Correction in Neutron and Nuclear $\beta$-decay
• Constrained gamma-Z interference corrections to parity-violating electron scattering
• Modification of electromagnetic structure functions for the $\gamma Z$-box diagram
• Hadronic weak charges and parity-violating forward Compton scattering