Parity Violation in Elastic Electron-Nucleon Scattering: Strangeness Content in the Nucleon

TL;DR

This paper investigates parity violation in elastic electron-nucleon scattering to better understand the nucleon's electroweak structure, focusing on the strangeness content, by comparing models with experimental data across various kinematics.

Contribution

It provides models for parity-violating asymmetry and analyzes the impact of different hadronic structure descriptions on these asymmetries, especially regarding strangeness content.

Findings

Models agree with experimental data across kinematics

Strangeness content significantly affects PV asymmetry

Different form factor prescriptions yield consistent results

Abstract

Parity violation in elastic electron-nucleon scattering is studied with the basic goal of improving the understanding of electroweak hadronic structure with special emphasis on the strangeness content in the nucleon. Models for the parity-violating (PV) asymmetry are provided and compared with the world data measured at very different kinematics. The effects introduced in the PV asymmetry due to alternative descriptions of the hadronic structure are analyzed in detail. In particular, a wide selection of prescriptions for dealing with the electromagnetic and neutral current weak interaction nucleon form factors, including the most recent ones used in the literature, is considered.