RT Journal Article
T1 Centrality dependence of ψ(2S) suppression in p-Pb collisions at √sNN=5.02 TeV
A1 ALICE Collaboration, 
A1 González Ferreiro, Elena
K1 Heavy Ion Experiments
K1 Quark Gluon Plasma
AB The inclusive production of the  (2S) charmonium state was studied as afunction of centrality in p-Pb collisions at the nucleon-nucleon center of mass energy√sNN= 5.02TeV at the CERN LHC. The measurement was performed with the ALICE detectorin the center of mass rapidity ranges -4:46 < ycms < -2:96 and 2:03 < ycms < 3:53,down to zero transverse momentum, by reconstructing the  (2S) decay to a muon pair.The  (2S) production cross section   (2S) is presented as a function of the collision centrality,which is estimated through the energy deposited in forward rapidity calorimeters.The relative strength of nuclear e ects on the  (2S) and on the corresponding1S charmonium state J/  is then studied by means of the double ratio of cross sections [σ ψ(2S) /σJ/ψ ]pPb /[σ ψ(2S) /σJ/ψ ]pp between p-Pb and pp collisions, and by the values of thenuclear modi cation factors for the two charmonium states. The results show a largesuppression of ψ(2S) production relative to the J/ψ at backward (negative) rapidity, correspondingto the ight direction of the Pb-nucleus, while at forward (positive) rapidity thesuppressions of the two states are comparable. Finally, comparisons to results from lowerenergy experiments and to available theoretical models are presented.
PB Springer
SN 1029-8479
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22152
UL http://hdl.handle.net/10347/22152
LA eng
NO Adam, J., Adamová, D., Aggarwal, M.M. et al. Centrality dependence of ψ(2S) suppression in p-Pb collisions at √sNN=5.02 TeV. J. High Energ. Phys. 2016, 50 (2016). https://doi.org/10.1007/JHEP06(2016)050
DS Minerva
RD 28 abr 2026