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.
F. Maltoni, J. Spengler, M. Bargiotti, A. Bertin, M. Bruschi, S. De Castro, et al. (2006). Analysis of charmonium production at fixed-target experiments in the NRQCD approach. PHYSICS LETTERS. SECTION B, 638, 202-208 [10.1016/j.physletb.2006.05.010].
Analysis of charmonium production at fixed-target experiments in the NRQCD approach
A. Bertin;S. De Castro;L. Fabbri;P. Faccioli;B. Giacobbe;I. Massa;M. Piccinini;N. Semprini-Cesari;R. Spighi;M. Villa;A. Vitale;A. Zoccoli
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
