Polarised Drell-Yan Process in the COMPASS Experiment

Apr 12, 2016, 3:00 PM
15m
SR4a (DESY Hamburg)

SR4a

DESY Hamburg

Spin Physics WG6 Spin Physics

Speaker

Márcia Quaresma (LIP - Lisbon)

Description

The COMPASS experiment at CERN has been contributing to the knowledge on the nucleon structure, and its description in terms of the Transverse Momentum Dependent Parton Distribution Functions (TMD PDFs), accessed through the SIDIS process. In 2014/2015 the data taking was dedicated to the polarised Drell-Yan (DY) measurement with a negative pion beam and a transversely polarised proton target, as well as unpolarised nuclear targets. These data are now being analysed. The predicted sign change in the Sivers distribution when accessed from DY with respect to SIDIS will be measured. The details on the experimental setup, the covered phase space, a preliminary first look into data distributions and predictions for the full data sample will be presented.

Primary author

Márcia Quaresma (LIP - Lisbon)

Presentation materials