Constraints on nuclear gluon densities from J/psi data
| dc.creator | Arleo, Francois | |
| dc.date | 2008-04-17 | |
| dc.date.accessioned | 2026-07-07T12:18:23Z | |
| dc.date.available | 2026-07-07T12:18:23Z | |
| dc.description | The gluon density in nuclei, G^A(x), is poorly constrained at all x from the current DIS and Drell-Yan data. In this paper, we point out that J/psi production measured in proton-nucleus collisions at sqrt(s)=38.8 GeV by the E866 collaboration puts stringent constraints on the x-dependence of the G^W/G^Be ratio in the x=0.02-0.1 range. The E866 data suggest a rather mild x-dependence of G^W/G^Be, and consequently tend to favour DS and HKM sets, rather than the DSg, EKS, and EPS parametrizations which exhibit a large shadowing and anti-shadowing. | |
| dc.description | 7 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/0804.2802 | |
| dc.identifier | http://arxiv.org/abs/0804.2802 | |
| dc.identifier | Phys.Lett.B666:31-33,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.06.074 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/212391 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraints on nuclear gluon densities from J/psi data | |
| dc.type | text |