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Analysis of charmonium production at fixed-target experiments in the NRQCD approach
F. Maltoni ; J. Spengler ; M. Bargiotti ; A. Bertin ; M. Bruschi ; S. De Castro ; L. Fabbri ; P. Faccioli ; B. Giacobbe ; F. Grimaldi ; I. Massa ; M. Piccinini ; N. Semprini-Cesari ; R. Spighi ; M. Villa ; A. Vitale ; A. Zoccoli ; PostScript ; PDF ; Other formats ; SLAC-SPIRES HEP ; to ; by ;
Date:	25 Jan 2006
Abstract:	We present an analysis of the existing data on charmonium hadro-production based on non-relativistic QCD (NRQCD) calculations at the next-to-leading order (NLO). All the data on J/psi and psi’ production in fixed-target experiments and on pp collisions at low energy are included. We find that the amount of color octet contribution needed to describe the data is about 1/10 of that found at the Tevatron.
Source:	arXiv, hep-ph/0601203
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