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

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Cited by in corpus (7)

• Heavy quarkonium: progress, puzzles, and opportunities
• On the mechanisms of heavy-quarkonium hadroproduction
• Measurement of Upsilon production in 7 TeV pp collisions at ATLAS
• Quarkonium production in high energy proton-proton and proton-nucleus collisions
• Production and polarization of Upsilon mesons in the k_T-factorization approach in more detail
• J/psi and Upsilon Polarization in Hadronic Production Processes
• Review of Physics Results from the Tevatron: Heavy Flavor Physics