%0 Journal Article
%T Upsilonium polarization as a touchstone in understanding the proton dynamics in QCD
%A Baranov
%A S. P.
%A Zotov
%A N. P.
%J High Energy Physics - Phenomenology
%D 2007
%I 
%R 10.1134/S0021364007190010
%X In the framework of the k_t-factorization approach, the production of $\Upsilon mesons at the Fermilab Tevatron and CERN LHC is considered, and the predictions on the spin alignment parameter $\alpha$ 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.
%U http://arxiv.org/abs/0707.0253