Measurement of the Parity-Violating Asymmetry in Electron-Deuteron Scattering in the Nucleon Resonance Region

TL;DR

This study measures parity-violating asymmetries in electron-deuteron scattering within the nucleon resonance region, extending previous data beyond the $ ext{Δ}(1232)$ and testing quark-hadron duality in electroweak interference structure functions.

Contribution

First measurement of parity-violating asymmetries in the resonance region beyond the $ ext{Δ}(1232)$, verifying quark-hadron duality at 10-15% level.

Findings

Confirmed quark-hadron duality in $ ext{γ}Z$ interference structure functions.

Provided data relevant for $ ext{γ}Z$ box-diagram correction calculations.

Extended the experimental data set in the nucleon resonance region.

Abstract

We report on parity-violating asymmetries in the nucleon resonance region measured using $5 - 6$ GeV longitudinally polarized electrons scattering off an unpolarized deuterium target. These results are the first parity-violating asymmetry data in the resonance region beyond the $\Delta(1232)$, and provide a verification of quark-hadron duality in the nucleon electroweak $\gamma Z$ interference structure functions at the (10-15)% level. The results are of particular interest to models relevant for calculating the $\gamma Z$ box-diagram corrections to elastic parity-violating electron scattering measurements.