# XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS16)

Apr 11 – 15, 2016
DESY Hamburg
Europe/Berlin timezone

## The gluon Sivers asymmetry measurements at COMPASS

Apr 12, 2016, 3:20 PM
15m
SR4a (DESY Hamburg)

Spin Physics

### Speaker

Mr Adam Szabelski (University of Trieste)

### Description

The Sivers effect describes the correlation between the spin of the nucleon and the orbital motion of partons. For gluons it has been measured at COMPASS via $J/\Psi$ production and via high-$p_T$ hadron pair production in Semi-Inclusive Deep Inelastic Scattering of a 160 GeV/$c$ muon beam off transversely polarised proton and deuteron targets by determining the amplitude of the modulation of the Sivers angle $\phi^{Siv}$ distribution. Both the approach using $J/\Psi$ channel and high-$p_T$ hadron pair selection will be described in detail and the results given.

### Primary author

Mr Adam Szabelski (University of Trieste)

 Slides