The production of the prompt charm mesons D-0, D+, D*(+), and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the LHC, at a centre-of-mass energy root s(NN) = 2.76 TeV per nucleon-nucleon collision. The p(t)-differential production yields in the range 2 < p(t) < 16 GeV/c at central rapidity, vertical bar y vertical bar < 0.5, were used to calculate the nuclear modification factor R-AA with respect to a proton-proton reference obtained from the cross section measured at root s = 7 TeV and scaled to root s = 2.76 TeV. For the three meson species, R-AA shows a suppression by a factor 3-4, for transverse momenta larger than 5 GeV/c in the 20% most central collisions. The suppression is reduced for peripheral collisions.

Suppression of high transverse momentum D mesons in central Pb-Pb collisions at root s(NN)=2.76 TeV / B., A., J., A., D., A., A. M., A., M. M., A., G. A., R., A. G., A., A., A., S. A., S., Z., A., N., A., A. A., M., S. U., A., A., A., D., A., B., A., R. A., M., A., A., A., A., E. A., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - STAMPA. - 2012:9(2012), p. 112. [10.1007/jhep09(2012)112]

Suppression of high transverse momentum D mesons in central Pb-Pb collisions at root s(NN)=2.76 TeV

L. Cunqueiro;MEDDI, Franco;
2012

Abstract

The production of the prompt charm mesons D-0, D+, D*(+), and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the LHC, at a centre-of-mass energy root s(NN) = 2.76 TeV per nucleon-nucleon collision. The p(t)-differential production yields in the range 2 < p(t) < 16 GeV/c at central rapidity, vertical bar y vertical bar < 0.5, were used to calculate the nuclear modification factor R-AA with respect to a proton-proton reference obtained from the cross section measured at root s = 7 TeV and scaled to root s = 2.76 TeV. For the three meson species, R-AA shows a suppression by a factor 3-4, for transverse momenta larger than 5 GeV/c in the 20% most central collisions. The suppression is reduced for peripheral collisions.
2012
heavy ions
01 Pubblicazione su rivista::01a Articolo in rivista
Suppression of high transverse momentum D mesons in central Pb-Pb collisions at root s(NN)=2.76 TeV / B., A., J., A., D., A., A. M., A., M. M., A., G. A., R., A. G., A., A., A., S. A., S., Z., A., N., A., A. A., M., S. U., A., A., A., D., A., B., A., R. A., M., A., A., A., A., E. A., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - STAMPA. - 2012:9(2012), p. 112. [10.1007/jhep09(2012)112]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/552706
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