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| VOLUME 86 | ISSUE 7 |
PAGE 499
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| Upsilonium polarization as a touchstone in understanding the parton dynamics in QCD
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S. P. Baranov, N. P. Zotov* 1)
P.N.Lebedev Institute of Physics RAS, 119991 Moscow, Russia
*D.V.Skobeltzyn Institute of Nuclear Physics, 119991 Moscow, Russia
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PACS: 12.38.Bx, 13.85.Ni, 14.40.Gx
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Abstract
In the framework of the kt-factorization approach, the
production of Υ mesons 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.
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