physics case for a polarised target for after lhc

• DOI: 10.48550/arxiv.1602.06857
• Publication Date: 2016-05-10
• Authors: Lansberg J. P.; Anselmino M.; Arnaldi R.; Brodsky S. J.; Chambert V.; Didelez J. P.; Echevarria M. G.; Ferreiro E. G.; Fleuret F.; Gao Y.; Genolini B.; Hadjidakis C.; Hrivnacova I.; Kikola D.; Kurepin A.; Lorce C.; Massacrier L.; Nass A.; Pisano C.; Schienbein I.; Schlegel M.; Scomparin E.; Seixas J.; Signori A.; Steffens E.; Topilskaya N.; Trzeciak B.; Uggerhoj U. I.; Uras A.; Ulrich R.; Yang Z.
• Keywords: Spin physics; fixed-target experiment; LHC; hadron structure; Multidisciplinary; [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]; Nuclear Theory; FOS: Physical sciences; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]; 7. Clean energy; 01 natural sciences; High Energy Physics - Experiment; Nuclear Theory (nucl-th); High Energy Physics - Phenomenology; High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph); [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]; 0103 physical sciences; [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; Nuclear Experiment (nucl-ex); Nuclear Experiment

We review a number of ideas put forward in favour of the use of a polarised target along with the proposed idea of a fixed-target experiment using the LHC beams -- AFTER@LHC. A number of recent studies have shown that single transverse-spin asymmetries (STSAs) are large enough to be precisely measured in the region accessible with AFTER@LHC, in particular as regards the Drell-Yan process as well as single-pion, isolated-photon and jet production. AFTER@LHC with a polarised target would also be the ideal experimental set-up to measure the gluon Sivers effect via a number of original quarkonium STSA studies. We discuss first figures-of-merit based on simulations for AFTER@LHC with a polarised target.<br/>7 pages, 2 figures, 1 table, LaTeX. Proceedings of the XVIth International Workshop in Polarized Sources, Targets, and Polarimetry, PSTP2015, 14-18 September 2015, Bochum, Germany<br/>