Speaker
Catarina Quintans
(LIP-Lisbon)
Description
The COMPASS experiment at CERN will start in the coming months its Drell-Yan
(DY) physics program. This is the first transversely polarized target Drell-Yan
measurement ever performed. Using a high intensity pion beam at 190 GeV/c
momentum, the collected statistics over one year of data-taking will provide
new insight to the transverse momentum dependent (TMD) parton distribution
functions.
During the last decade, COMPASS measured the azimuthal single spin asymmetries
in semi-inclusive DIS (SIDIS) processes which contributed in a decisive way to the
present knowledge of the nucleon TMDs. The predicted sign change of the Sivers
and Boer-Mulders TMDs when accessed from SIDIS or from DY processes will be
experimentally verified by this new DY measurement.
The unpolarized Drell-Yan physics and the EMC effect studies, made possible by the
inclusion of thin nuclear targets in the setup, will also be presented. The
feasibility for a first look at the kaon induced Drell-Yan process will be discussed.
The possibility to do detailed J\psi polarization studies with large statistics,
bringing new input to a long-standing problem, will be discussed as well.
Primary author
Catarina Quintans
(LIP-Lisbon)
