TY - JOUR
T1 - Suppression of high transverse momentum D mesons in central Pb-Pb collisions at v sNN=276TeV
AU - Abelev, B.
AU - Bøggild, Hans
AU - Bearden, Ian
AU - Christensen, Christian Holm
AU - Dalsgaard, Hans Hjersing
AU - Gulbrandsen, Kristjan Herlache
AU - Gaardhøje, Jens Jørgen
AU - Nielsen, Børge Svane
AU - Nygaard, Casper
AU - Søgaard, Carsten
PY - 2012/9/25
Y1 - 2012/9/25
N2 - 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 2t<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.
AB - 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 2t<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.
U2 - 10.1007/JHEP09(2012)112
DO - 10.1007/JHEP09(2012)112
M3 - Journal article
SN - 1126-6708
VL - 2012
SP - 112
JO - Journal of High Energy Physics (Online)
JF - Journal of High Energy Physics (Online)
IS - 9
ER -