Polarization of an electron scattered by static potentials

TL;DR

This paper investigates how an electron's polarization changes when scattered by various static potentials, revealing distinct polarization signs and magnitudes that align with recent experimental findings.

Contribution

It introduces a method to analyze electron polarization for different static potentials using wavepackets with definite orbital angular momentum.

Findings

Electron polarization sign differs for vector potential compared to other potentials.

Polarization magnitude aligns with recent experimental data.

Numerical results cover collision parameters 0<b<2 fm.

Abstract

We study the polarization of an electron scattered by different static potentials. The initial state of the electron is chosen as a wavepacket to construct the definite orbital angular momentum, and the final polarization of the electron, scattered by different static potentials such as vector, pseudovector, scalar and pseudoscalar potentials, is calculated. Numerical results show that, the sign of the polarization of the electron scattered by the vector potential is opposite to the other three cases, and the magnitude order of the polarization value is consistent with recent experimental result in the collision parameter range $0<b<2\,\mathrm{fm}$.