Spin dependence of the antinucleon-nucleon interaction

TL;DR

This paper reviews current understanding of the spin-dependent antinucleon-nucleon interaction at low to medium energies, emphasizing predictions for spin-dependent cross sections relevant to upcoming experiments.

Contribution

It provides new predictions for spin-dependent cross sections using potential models and compares them with existing partial-wave analysis results.

Findings

Predictions for sigma_1 and sigma_2 cross sections are presented.

Comparison between potential models and partial-wave analysis results.

Insights relevant for planned PAX collaboration experiments.

Abstract

The status of our present knowledge on the antinucleon-nucleon interaction at low and medium energies is discussed. Special emphasis is put on aspects related to its spin dependence which are relevant for experiments planned by the PAX collaboration. Predictions for the spin-dependent antiproton-proton cross sections sigma_1 and sigma_2 are presented, utilizing antinucleon-nucleon potential models developed by the Juelich group, and compared to results based on the amplitudes of the Nijmegen partial-wave analysis.