Upsilonium polarization as a touchstone in understanding the proton dynamics in QCD
Abstract
Description
In the framework of the k_t-factorization approach, the production of $Υmesons at the Fermilab Tevatron and CERN LHC is considered, and the predictions on the spin alignment parameter $α$ are presented. We argue that measuring the polarization of quarkonium states can serve as a crucial test discriminating two competing theoretical approaches to parton dynamics in QCD.
8 pages, 2 figures
8 pages, 2 figures