Transversely polarized Drell-Yan measurements at COMPASS
Abstract
The exploration of the transverse spin structure of the nucleon by measuring spin (in)dependent azimuthal asymmetries in semi-inclusive DIS (SIDIS) and in Drell-Yan processes is one of the main objectives of the COMPASS experiment at CERN (SPS, M2 beamline). During the first phase of the experiment (2002-2011) a series of SIDIS measurements were performed, using a longitudinally polarized muon beam impinging on transversely polarized LiD or NH targets. As a part of the COMPASS-II programme, in 2015 and 2018 the experiment performed Drell-Yan measurements with a beam interacting with a transversely polarized NH. The measurement of the Sivers and other azimuthal asymmetries at the same hard scale in polarized SIDIS and Drell-Yan provides a unique possibility to test predicted in QCD (pseudo-)universal features of transverse momentum dependent parton distribution functions.
Keywords
Cite
@article{arxiv.1908.01727,
title = {Transversely polarized Drell-Yan measurements at COMPASS},
author = {Bakur Parsamyan},
journal= {arXiv preprint arXiv:1908.01727},
year = {2019}
}
Comments
XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects - DIS2019 - 8-12 April, 2019 Torino, Italy. arXiv admin note: substantial text overlap with arXiv:1801.01487