| Autor: |
Abelev, B, Adam, J, Adamová, D, Adare, A M, Aggarwal, M M, Aglieri Rinella, G, Agocs, A G, Agostinelli, A, Aguilar Salazar, S, Ahammed, Z, Ahmad Masoodi, A, Ahmad, N, Ahn, S U, Akindinov, A, Aleksandrov, D, Alessandro, B, Alfaro Molina, R, Alici, A, Alkin, A, Almaráz Aviña, E, Alme, J, Alt, T, Altini, V, Altinpinar, S, Altsybeev, I, Andrei, C, Andronic, A, Anguelov, V, Anielski, J, Anson, C, Antičić, T, Antinori, F |
| Přispěvatelé: |
Department of Physics, Faculty of Science |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Physical Review Letters |
| DOI: |
10.1103/PhysRevLett.109.072301 |
| Popis: |
The ALICE experiment has measured the inclusive J/psi production in Pb-Pb collisions at root s(NN) = 2.76 TeV down to zero transverse momentum in the rapidity range 2.5 < y < 4. A suppression of the inclusive J/psi yield in Pb-Pb is observed with respect to the one measured in pp collisions scaled by the number of binary nucleon-nucleon collisions. The nuclear modification factor, integrated over the 0%-80% most central collisions, is 0.545 +/- 0.032(stat) +/- 0.083dsyst_ and does not exhibit a significant dependence on the collision centrality. These features appear significantly different from measurements at lower collision energies. Models including J/psi production from charm quarks in a deconfined partonic phase can describe our data. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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