ASSOCIATED J PSI+GAMMA PHOTOPRODUCTION AS A PROBE OF THE COLOR-OCTET MECHANISM/

Authors
CACCIARI M GRECO M KRAMER M
Citation
M. Cacciari et al., ASSOCIATED J PSI+GAMMA PHOTOPRODUCTION AS A PROBE OF THE COLOR-OCTET MECHANISM/, Physical review. D. Particles and fields, 55(11), 1997, pp. 7126-7133
Citations number
53
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
55
Issue
11
Year of publication
1997
Pages
7126 - 7133
Database
ISI
SICI code
0556-2821(1997)55:11<7126:AJPPAA>2.0.ZU;2-E
Abstract
The associated production of a J/psi and a photon in photon-hadron col lisions is considered and shown to be a good probe of the presence of color-octet-mediated channels in quarkonia production, as predicted by the factorization approach within NRQCD. Total and differential cross sections for photoproduction at fixed target experiments and at DESY HERA are presented. Associated J/psi + gamma production st hadron coll iders is briefly discussed.