Suppression of high transverse momentum D mesons in central Pb-Pb collisions at √sNN = 2.76TeV
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Publication date
2012
Authors
Abelev, B.I.
Adam, J.
Bjelogrlic, S
Chojnacki, M.
Christakoglou, P.
de Rooij, R. S.
Grelli, A.
La Pointe, S.L.
Luparello, G.
Mischke, A.
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Abstract
Abstract: The production of the prompt charm mesons D0, D+, D∗+, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the LHC, at a centre-of-mass energy √sNN = 2.76 TeV per nucleon-nucleon collision. The pt-differential production yields in the range 2 <pt <16 GeV/c at central rapidity, |y| <0.5, were used to calculate the nuclear modification factor RAA with respect to a proton-proton reference obtained from the cross section measured at √s = 7 TeV and scaled to √s = 2.76 TeV. For the three meson species, RAA 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.
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Abelev, B I, Adam, J, Bjelogrlic, S, Chojnacki, M, Christakoglou, P, de Rooij, R S, Grelli, A, La Pointe, S L, Luparello, G, Mischke, A, Nooren, G J L, Peitzmann, T, Reicher, M, Snellings, R J M, Thomas, D, van Leeuwen, M, Veldhoen, M, Verweij, M, Zhou, Y & Zynovyev, M 2012, 'Suppression of high transverse momentum D mesons in central Pb-Pb collisions at √sNN = 2.76TeV', Journal of High Energy Physics, vol. 09, 112, pp. 112/1-112/37. https://doi.org/10.1007/JHEP09