Spin dependence of the pbar-d and pbar-3He interactions

TL;DR

This study investigates the spin-dependent elastic scattering of antiprotons on deuteron and helium-3 targets using Glauber-Sitenko theory, providing detailed calculations of cross sections and analyzing powers across 50-300 MeV energies.

Contribution

It introduces a modified formalism for pbar-d scattering that includes full spin dependence and applies it to calculate various scattering observables.

Findings

Differential cross sections and analyzing powers are computed for 50-300 MeV energies.

Total polarized cross sections are derived using the optical theorem.

The study discusses the polarization buildup efficiency in storage rings.

Abstract

Elastic scattering of antiprotons on deuteron and 3He targets is studied within the Glauber-Sitenko theory. In case of pbar-d scattering, the single- and double pbar-N scattering mechanisms and the full spin dependence of the elementary pbar-N scattering amplitudes are taken into account on the basis of an appropriately modified formalism developed for p-d scattering. Differential cross sections and analyzing powers are calculated for antiproton beam energies between 50 and 300 MeV, using the Nbar-N model of the Juelich group as input. Results for total polarized cross sections are obtained via the optical theorem. The efficiency of the polarization buildup for antiprotons in a storage ring is discussed.