ϒ production in pp and pA collisions: from RHIC to the LHC

I discuss ϒ production in pp collisions at RHIC, Tevatron and LHC energies, in particular the behaviour of the differential cross section in rapidity and the impact of QCD corrections on the PT differential cross section. I also emphasise the very good agreement between the parameter-free predictions of the Colour-Singlet Model (CSM) and the first LHC data, especially in the region of low transverse momenta, which is the most relevant one for heavy-ion studies. I also show that the CSM predicts ϒ cross-section ratios in agreement with the most recent LHC data. I then briefly discuss the nuclear-matter effects on ϒ production at RHIC and the LHC in p(d)A collisions and, by extension, in AA collisions. I argue that a) the ϒ break-up probability can be neglected, at RHIC and the LHC, b) gluon shadowing –although non-negligible– is not strong enough to describe forward RHIC data, c) backward RHIC data hints at a gluon EMC effect, possibly stronger than the quark one. Outlooks for the LHC pPb run are also presented