We have studied the transverse-momentum (pT) dependence of the inclusive J/Psi production in p-Pb collisions at sqrt(s_NN) = 5.02 TeV, in three center-of-mass rapidity (ycms) regions, down to zero pT. Results in the forward and backward rapidity ranges (2.03 < ycms < 3.53 and −4.46 < ycms < −2.96) are obtained by studying the J/Psi decay to μ+μ−, while the mid-rapidity region (−1.37 < ycms < 0.43) is investigated by measuring the e+e− decay channel. The pT dependence of the J/Psi production cross section and nuclear modification factor are presented for each of the rapidity intervals, as well as the J/Psi mean pT values. Forward and mid-rapidity results show a suppression of the J/ yield, with respect to pp collisions, which decreases with increasing pT. At backward rapidity no significant J/Psi suppression is observed. Theoretical models including a combination of cold nuclear matter effects such as shadowing and partonic energy loss, are in fair agreement with the data, except at forward rapidity and low transverse momentum. The implications of the p-Pb results for the evaluation of cold nuclear matter effects on J/Psi production in Pb-Pb collisions are also discussed.

Adam, J., Adamová, D., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., et al. (2015). Rapidity and transverse-momentum dependence of the inclusive J/ψ nuclear modification factor in p-Pb collisions at sqrt(s_NN) = 5.02 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2015(6), 1-31 [10.1007/JHEP06(2015)055].

Rapidity and transverse-momentum dependence of the inclusive J/ψ nuclear modification factor in p-Pb collisions at sqrt(s_NN) = 5.02 TeV

Alici, A.;ARCELLI, SILVIA;BASILE, MAURIZIO;BELLINI, FRANCESCA;CIFARELLI, LUISA;COLOCCI, MANUEL;GUERZONI, BARBARA;SCIOLI, GILDA;
2015

Abstract

We have studied the transverse-momentum (pT) dependence of the inclusive J/Psi production in p-Pb collisions at sqrt(s_NN) = 5.02 TeV, in three center-of-mass rapidity (ycms) regions, down to zero pT. Results in the forward and backward rapidity ranges (2.03 < ycms < 3.53 and −4.46 < ycms < −2.96) are obtained by studying the J/Psi decay to μ+μ−, while the mid-rapidity region (−1.37 < ycms < 0.43) is investigated by measuring the e+e− decay channel. The pT dependence of the J/Psi production cross section and nuclear modification factor are presented for each of the rapidity intervals, as well as the J/Psi mean pT values. Forward and mid-rapidity results show a suppression of the J/ yield, with respect to pp collisions, which decreases with increasing pT. At backward rapidity no significant J/Psi suppression is observed. Theoretical models including a combination of cold nuclear matter effects such as shadowing and partonic energy loss, are in fair agreement with the data, except at forward rapidity and low transverse momentum. The implications of the p-Pb results for the evaluation of cold nuclear matter effects on J/Psi production in Pb-Pb collisions are also discussed.
2015
Adam, J., Adamová, D., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., et al. (2015). Rapidity and transverse-momentum dependence of the inclusive J/ψ nuclear modification factor in p-Pb collisions at sqrt(s_NN) = 5.02 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2015(6), 1-31 [10.1007/JHEP06(2015)055].
Adam, J.; Adamová, D.; Aggarwal, M. M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmed, I.; Ahn, S. U.; Aimo, I.; Aiola, S.; Ajaz, ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/541693
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