Recent COMPASS results on Transverse Spin and Momentum dependent distributions and fragmentation functions.

Apr 12, 2016, 2:30 PM
25m
SR4a (DESY Hamburg)

SR4a

DESY Hamburg

Spin Physics WG6 Spin Physics

Speaker

Dr Andrea Bressan (University of Trieste and Trieste Division of INFN)

Description

COMPASS is a fixed target experiment in operation at CERN since 2002 with a wide physics programme. By using either muon or hadron beams, both the study of the spin structure of the nucleon and the search of exotic states in hadron spectroscopy are performed. An important part of this programme is the study of transverse spin and momentum dependent parton distribution and fragmentation functions. First measurements of HERMES and COMPASS showed sizeable Collins and Sivers asymmetries, allowing first extractions of TMD PDFs and FF. Now this field of research is entering the phase of precision measurements and is a central topic of many present and future experiments. Recent COMPASS results on Collins and Sivers asymmetries and on multidimensional analysis of SSA will be reviewed together with the perspective for future measurements.

Summary

(On behalf of the COMPASS Collaboration)

Primary author

Dr Andrea Bressan (University of Trieste and Trieste Division of INFN)

Presentation materials