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Novel Phenomenology of Parton Distributions from the Drell-Yan Process
The Drell-Yan massive lepton-pair production in hadronic collisions provides
a unique tool complementary to the Deep-Inelastic Scattering for probing the
partonic substructures in hadrons. We review key concepts, approximations, and
progress for QCD factorization of the Drell-Yan process in terms of collinear
or transverse momentum dependent (TMD) parton distribution functions. We
present experimental results from recent fixed-target Drell-Yan as well as
and boson production at colliders, focussing on the topics of flavor
structure of the nucleon sea as well as the extraction of novel Sivers and
Boer-Mulders functions via single transverse spin asymmetries and azimuthal
lepton angular distribution of the Drell-Yan process. Prospects for future
Drell-Yan experiments are also presented.Comment: 50 pages and 23 figures, and references added and minor typos
correcte
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