Quarkonia production and polarization at the hadron colliders

Abstract

This talk presents a review of recent results for quarkonium production at the LHC from ATLAS, CMS, LHCb, and ALICE. Production cross sections for $J/\psi$, $\psi (2S)$, and ${\rm Y}(mS)$, and production ratios for ${\chi }_{c,bJ}$ are found to be in good agreement with predictions from non-relativistic QCD. In contrast, spin-alignment (polarization) measurements seem to disagree with all theoretical predictions. Some other production channels useful for investigating quarkonium hadroproduction mechanisms are also considered.

Comments: Proceedings for The Second Annual Conference on Large Hadron Collider Physics