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Production and polarization of Upsilon mesons in the k_T-factorization approach in more detail

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 نشر من قبل Nikolai Zotov
 تاريخ النشر 2008
  مجال البحث
والبحث باللغة English
 تأليف S.P. Baranov




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In the framework of the k_T-factorization approach, the production and polarization of Upsilon mesons at the Fermilab Tevatron is considered, and a comparision of the calculated double differential distributions and spin alignment parameter $alpha$ with the D0 experimental data is shown. We argue that measuring the double differential cross section and the polarization of upsilonium states can serve as a crucial test discriminating two competing theoretical approaches to the parton dynamics in QCD.

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