J/Psi production, chi polarization and color fluctuations

The hard contributions to the heavy quarkonium-nucleon cross sections are calculated based on the QCD factorization theorem and the nonrelativistic quarkonium model. We evaluate the nonperturbative part of these cross se
The hard contributions to the heavy quarkonium-nucleon cross sections are calculated based on the QCD factorization theorem and the nonrelativistic quarkonium model. We evaluate the nonperturbative part of these cross sections which dominates at psNN 20 GeV at the Cern Super Proton Synchrotron (SPS) and becomes a correction at psNN 6 TeV at the CERN Large Hadron Collider (LHC). J/psi production at the CERN SPS is well described by hard QCD, when the larger absorption cross sections of the states predicted by QCD are taken into account. We predict an A-dependent polarization of the states. The expansion of small wave packets is discussed.
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Metadaten
Author:Lars Gerland, Leonid Frankfurt, Mark Strikman, Horst Stöcker, Walter Greiner
URN:urn:nbn:de:hebis:30-23194
Document Type:Preprint
Language:English
Date of Publication (online):2005/12/14
Year of first Publication:1998
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/12/14
Tag:Hadronenbeschleuniger ; LHC ; Quanten-Chromodynamik ; SPS; Teilchenbeschleuniger
LHC ; Large Hadron Collider ; Quantum Chromodynamic ; SPS; Super Proton Synchrotron
Source:Phys.Rev.Lett.81:762-765,1998 , http://arxiv.org/abs/nucl-th/9803034 Version 2
HeBIS PPN:18533525X
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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