Résumé
A new set of results obtained by the NA50 experiment for the J/ψ production at the CERN SPS is presented. Peripheral Pb-Pb collisions benefit from an improved setup, confirming the departure from ordinary production observed for the most central collisions, which has suggested the occurrence of a quark gluon plasma formation. Improved comparative analyses of older datas confirms the φ meson yield increase with centrality and between systems. The interest of the ratio φ/ w as a direct measurement of the strangeness increase is underlined.
| langue originale | Anglais |
|---|---|
| Pages (de - à) | C253-C256 |
| journal | Nuclear Physics A |
| Volume | 721 |
| Les DOIs | |
| état | Publié - 30 juin 2003 |
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