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

doi:10.1016/j.physletb.2006.05.010

arXiv · hep-ph/0601203

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

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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.

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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. 2006-02-13. Analysis of charmonium production at fixed-target experiments in the NRQCD approach. https://doi.org/10.1016/j.physletb.2006.05.010

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