The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √sNN=2.76  TeV down to zero transverse momentum in the rapidity range 2.5<y<4. A suppression of the inclusive J/ψ 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)±0.083(syst) 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/ψ production from charm quarks in a deconfined partonic phase can describe our data.

J/ψ Suppression at Forward Rapidity in Pb-Pb Collisions at √sNN=2.76  TeV / 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, N., Ahmad Masoodi, A., Ahn, S.U., Akindinov, A., Aleksandrov, D., Alessandro, B., Alfaro Molina, R., Alici, A., Alkin, A., Almaráz Aviña, E., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 109:7(2012). [10.1103/PhysRevLett.109.072301]

J/ψ Suppression at Forward Rapidity in Pb-Pb Collisions at √sNN=2.76  TeV

G. E. Bruno;
2012

Abstract

The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √sNN=2.76  TeV down to zero transverse momentum in the rapidity range 2.5
2012
http://link.aps.org/doi/10.1103/PhysRevLett.109.072301
J/ψ Suppression at Forward Rapidity in Pb-Pb Collisions at √sNN=2.76  TeV / 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, N., Ahmad Masoodi, A., Ahn, S.U., Akindinov, A., Aleksandrov, D., Alessandro, B., Alfaro Molina, R., Alici, A., Alkin, A., Almaráz Aviña, E., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 109:7(2012). [10.1103/PhysRevLett.109.072301]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/7506
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