COLOR-OCTET CONTRIBUTIONS TO J PSI HADROPRODUCTION AT FIXED TARGET ENERGIES/

Authors
GUPTA S SRIDHAR K
Citation
S. Gupta et K. Sridhar, COLOR-OCTET CONTRIBUTIONS TO J PSI HADROPRODUCTION AT FIXED TARGET ENERGIES/, Physical review. D. Particles and fields, 54(9), 1996, pp. 5545-5547
Citations number
22
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
54
Issue
9
Year of publication
1996
Pages
5545 - 5547
Database
ISI
SICI code
0556-2821(1996)54:9<5545:CCTJPH>2.0.ZU;2-3
Abstract
We investigate the integrated cross section for forward J/psi, product ion in proton-proton and pion-proton collisions at center-of-mass ener gies up to 60 GeV. We find that color-octet contributions to the cross section are crucially important, and their inclusion produces a very good description of the data. Since the values of nonperturbative matr ix elements are fixed by other experiments, these predictions are para meter-free.