Semi-inclusive spin asymmetries in polarised deep inelastic electron scattering

TL;DR

This paper reports preliminary results from the 1995 HERMES experiment, which measured semi-inclusive spin asymmetries in polarized deep inelastic electron scattering using a polarized helium-3 target at DESY.

Contribution

First semi-inclusive spin asymmetry measurements in polarized deep inelastic scattering with a polarized helium-3 target at DESY.

Findings

Initial data collected in 1995 at DESY

Preliminary semi-inclusive asymmetry results presented

Advances understanding of nucleon spin structure

Abstract

In 1995, the HERMES experiment at DESY (Hamburg, Germany) has taken its first data, using the 27.5 GeV polarised HERA positron beam impinging on a longitudinally polarised internal $^3$He target. Preliminary results from the semi-inclusive physics program are presented.