Constraints on spin observables in antiproton-proton to antiLambda-Lambda

TL;DR

This paper discusses algebraic relations among spin observables in antiproton-proton to antiLambda-Lambda reactions, providing constraints on existing and future polarization and spin-correlation data.

Contribution

It highlights that spin observables are interconnected through simple algebraic relations, imposing constraints on experimental data in this reaction.

Findings

Spin observables are not independent but related algebraically.

Constraints help interpret polarization and spin-correlation data.

Applicable to both existing and upcoming experimental results.

Abstract

It is recalled that spin-observables in the strangeness-exchange reaction $\bar{p}{p} \to \bar{\Lambda}{\Lambda}$ are not independent but are related to each other by simple algebraic relations. This provides constraints on the existing data on polarization and spin-correlation coefficients, and also on the forthcoming data obtained using a polarized proton target.