Longo, R. (2017) Highlights from COMPASS SIDIS and Drell-Yan programmes. Il nuovo cimento C, 40 (2). pp. 1-8. ISSN 1826-9885
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Abstract
One of the main objectives of the COMPASS experiment at CERN is the study of transverse spin structure of the nucleon trough measurement of target spin (in)dependent azimuthal asymmetries in semi-inclusive deep inelastic scattering (SIDIS) and Drell-Yan (DY) processes with transversely polarized targets. Within the QCD parton model these azimuthal asymmetries give access to a set of transverse-momentum-dependent (TMD) parton distribution functions (PDF) which parameterize the spin structure of the nucleon. In the TMD framework of QCD it is predicted that the two naively time-reversal odd TMD PDFs, i.e. the quark Sivers functions and Boer-Mulders functions, have opposite sign when measured in SIDIS or DY. The experimental test of this fundamental prediction is a major challenge in hadron physics. COMPASS former SIDIS results and upcoming results from DY measurements give a unique and complementary input to address this and other important open issues in spin physics.
| Item Type: | Article |
|---|---|
| Depositing User: | Marina Spanti |
| Date Deposited: | 17 Nov 2020 09:39 |
| Last Modified: | 17 Nov 2020 09:39 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/19905 |
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