The nuclear modification factor, RAA, of the prompt charmed mesons D0, D+ and D*+, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at a centre-of-mass energy sqrt(s_NN) = 2:76 TeV in two transverse momentum intervals, 5 < pT < 8 GeV/c and 8 < pT < 16 GeV/c, and in six collision centrality classes. The RAA shows a maximum suppression of a factor of 5-6 in the 10% most central collisions. The suppression and its centrality dependence are compatible within uncertainties with those of charged pions. A comparison with the RAA of non-prompt J/Psi from B meson decays, measured by the CMS Collaboration, hints at a larger suppression of D mesons in the most central collisions.

Adam, J., Adamová, D., Aggarwal, M., Aglieri Rinella, G., Agnello, M., Agrawal, N., et al. (2015). Centrality dependence of high-pT D meson suppression in Pb-Pb collisions at sqrt(s_NN)= 2.76 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2015(11), 1-24 [10.1007/JHEP11(2015)205].

Centrality dependence of high-pT D meson suppression in Pb-Pb collisions at sqrt(s_NN)= 2.76 TeV

ALICI, ANDREA;ARCELLI, SILVIA;BASILE, MAURIZIO;BELLINI, FRANCESCA;CIFARELLI, LUISA;COLOCCI, MANUEL;GUERZONI, BARBARA;SCIOLI, GILDA;
2015

Abstract

The nuclear modification factor, RAA, of the prompt charmed mesons D0, D+ and D*+, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at a centre-of-mass energy sqrt(s_NN) = 2:76 TeV in two transverse momentum intervals, 5 < pT < 8 GeV/c and 8 < pT < 16 GeV/c, and in six collision centrality classes. The RAA shows a maximum suppression of a factor of 5-6 in the 10% most central collisions. The suppression and its centrality dependence are compatible within uncertainties with those of charged pions. A comparison with the RAA of non-prompt J/Psi from B meson decays, measured by the CMS Collaboration, hints at a larger suppression of D mesons in the most central collisions.
2015
Adam, J., Adamová, D., Aggarwal, M., Aglieri Rinella, G., Agnello, M., Agrawal, N., et al. (2015). Centrality dependence of high-pT D meson suppression in Pb-Pb collisions at sqrt(s_NN)= 2.76 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2015(11), 1-24 [10.1007/JHEP11(2015)205].
Adam, J.; Adamová, D.; Aggarwal, M.M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahn, S.U.; Aimo, I.; Aiola, S.; Ajaz, M.; Akindinov...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/540797
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