# SPIN 2018

9-14 September 2018
University of Ferrara
Europe/Rome timezone
23RD INTERNATIONAL SPIN SYMPOSIUM

## DIS on a polarized deuteron with spectator nucleon tagging

13 Sep 2018, 17:00
20m

### A8

Parallel Sessions Future Facilities and Experiments

### Speaker

Wim Cosyn (Ghent University)

### Description

Tagged DIS measurements on a polarized deuteron are possible at an electron-ion collider (EIC) with forward proton and neutron detectors. Using the pole extrapolation method, where one extrapolates to the on-shell pole of the struck nucleon, this would enable the extraction of high precision neutron (spin) structure functions in a wide range of $x,Q^2$. We outline the general form of the SIDIS cross section on a polarized spin 1 target, which has 41 structure functions. We show calculations in a factorized model using the $NN$ light-front wave function for the deuteron for unpolarized and polarized observables, with focus on the extraction of g1 for the quasi-free neutron at an EIC. We discuss the influence of nuclear final-state interactions and shadowing effects on observables and comment on possible extensions such as medium modifications, exclusive channels and nuclei with A>2.

### Primary author

Wim Cosyn (Ghent University)

### Co-author

Christian Weiss (Jefferson Lab)

 Slides