Inclusive J/psi production has been studied with the ALICE detector in p-Pb collisions at the nucleon-nucleon center of mass energy = 5.02 TeV at the CERN LHC. The measurement is performed in the center of mass rapidity domains 2.03 < y (cms) < 3.53 and -4.46 < y (cms) < -2.96, down to zero transverse momentum, studying the mu (+) mu (-) decay mode. In this paper, the J/psi production cross section and the nuclear modification factor R (pPb) for the rapidities under study are presented. While at forward rapidity, corresponding to the proton direction, a suppression of the J/psi yield with respect to binary-scaled pp collisions is observed, in the backward region no suppression is present. The ratio of the forward and backward yields is also measured differentially in rapidity and transverse momentum. Theoretical predictions based on nuclear shadowing, as well as on models including, in addition, a contribution from partonic energy loss, are in fair agreement with the experimental results.

J/psi production and nuclear effects in p-Pb collisions at=5.02 TeV / B., A., J., A., D., A., A. M., A., M. M., A., G. A., R., M., A., A. G., A., A., A., Z., A., N., A., A. A., M., I., A., S. U., A., S. A., A., I., A., S., A., M., A., A., A., D., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - STAMPA. - 02:(2014), p. 073. [10.1007/JHEP02(2014)073]

J/psi production and nuclear effects in p-Pb collisions at=5.02 TeV

L. Cunqueiro;MEDDI, Franco;
2014

Abstract

Inclusive J/psi production has been studied with the ALICE detector in p-Pb collisions at the nucleon-nucleon center of mass energy = 5.02 TeV at the CERN LHC. The measurement is performed in the center of mass rapidity domains 2.03 < y (cms) < 3.53 and -4.46 < y (cms) < -2.96, down to zero transverse momentum, studying the mu (+) mu (-) decay mode. In this paper, the J/psi production cross section and the nuclear modification factor R (pPb) for the rapidities under study are presented. While at forward rapidity, corresponding to the proton direction, a suppression of the J/psi yield with respect to binary-scaled pp collisions is observed, in the backward region no suppression is present. The ratio of the forward and backward yields is also measured differentially in rapidity and transverse momentum. Theoretical predictions based on nuclear shadowing, as well as on models including, in addition, a contribution from partonic energy loss, are in fair agreement with the experimental results.
2014
Relativistic heavy ion physics, Heavy Ions, Charm physics
01 Pubblicazione su rivista::01a Articolo in rivista
J/psi production and nuclear effects in p-Pb collisions at=5.02 TeV / B., A., J., A., D., A., A. M., A., M. M., A., G. A., R., M., A., A. G., A., A., A., Z., A., N., A., A. A., M., I., A., S. U., A., S. A., A., I., A., S., A., M., A., A., A., D., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - STAMPA. - 02:(2014), p. 073. [10.1007/JHEP02(2014)073]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/552562
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