Future Polarised DIS Fixed Target Experiments

TL;DR

Upcoming polarized deep inelastic scattering experiments aim to deepen understanding of nucleon spin structure by measuring semi-inclusive asymmetries, gluon polarization, and quark transversity distributions using advanced experimental setups.

Contribution

This paper highlights the focus of future experiments on semi-inclusive asymmetries and the detailed study of gluon polarization and quark flavor decomposition.

Findings

Preparation of upgraded HERMES and new COMPASS experiments

Investigation of gluon polarization via open charm and high p_T hadron pairs

Measurement of transversity distributions with transversely polarized targets

Abstract

New experiments in polarised deep inelastic scattering will mainly concentrate on the measurement of semi-inclusive asymmetries. Especially, the upgraded HERMES experiment at DESY and the newly build COMPASS experiment at CERN will investigate the gluon polarisation via open charm and high p_T hadron pair production, study in detail the flavour decomposition of the quark helicity distributions and measure the tranversity distributions with tranversely polarised targets.