Measuring the Tensor Polarization of Positronium

TL;DR

This paper proposes a method to measure tensor polarization in positronium beams by analyzing lifetime variations under different magnetic field orientations, enabling more precise polarization characterization.

Contribution

It introduces a novel technique to determine tensor polarization in positronium using lifetime measurements at multiple magnetic field orientations.

Findings

Lifetime varies with magnetic field orientation.

Method allows tensor polarization measurement.

Potential for improved positronium polarization analysis.

Abstract

A method for measuring the tensor polarization in a positronium (Ps) beam is proposed, which is based on the determination of the Ps lifetime as a function of the orientation of a homogeneous magnetic field. The dependence of the orthopositronum (o-Ps) lifetime on the angle between the directions of the magnetic field and the tensor polarization of the Ps beam can be determined from the results of measurements from two or more field orientations.