$J/ψ$ at small-$x$
| dc.creator | Doncheski, M. A. | |
| dc.creator | Ducati, M. B. Gay | |
| dc.creator | Halzen, F. | |
| dc.date | 1993-02-16 | |
| dc.date.accessioned | 2026-07-07T03:55:57Z | |
| dc.date.available | 2026-07-07T03:55:57Z | |
| dc.description | It has been suggested that the suppression of $J/ψ$ production in heavy nuclei is a signature of the formation of quark-gluon plasma. We here show that this phenomenon can be understood in terms of conventional physics, {\it i.e.} {\it i)} perturbative QCD, {\it ii)} the parton recombination implementation of shadowing in the initial state, and {\it iii)} final state interactions with the hadronic debris of the nuclear target. Unlike previous calculations we include both the direct $J/ψ$ production and its production via radiative $χ$ decays ($χ_J \to J/ψ+ γ$). We are able to reproduce the experimental data including their small-$x$ behavior. We emphasize the importance of studying the $x_2$-dependence of the ratio $σ(b A)/σ(b N)$, where $b$ designates the beam and $x_2$ is the momentum fraction of the parton from the nuclear target. | |
| dc.description | 16 pages (6 figures not included - available from the authors), MAD/PH/742 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9302263 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9302263 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/44752 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | $J/ψ$ at small-$x$ | |
| dc.type | text |