Upsilonium polarization as a touchstone in understanding the proton dynamics in QCD

Abstract

In the framework of the k_t-factorization approach, the production of ${\rm Y}mesonsattheFermilabTevatronandCERNLHCisconsidered,andthepredictionsonthespinalignmentparameter$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

Cited by in corpus (2)

• On the mechanisms of heavy-quarkonium hadroproduction
• Production and polarization of Upsilon mesons in the k_T-factorization approach in more detail