Speaker
Zaida Conesa del Valle
(CERN)
Description
The production of the prompt charm mesons D0, D+, D∗+, and their antiparticles, in Pb–Pb collisions at the LHC, at a centre-of-mass energy sqrt(sNN) = 2.76 TeV per nucleon–nucleon collision, has been measured with the ALICE detector. 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 sqrt(s) = 7 TeV and scaled to sqrt(s) = 2.76 TeV. For the three meson species, RAA shows a suppression of 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. Prospects for extending these measurements using the Pb–Pb data collected during the 2011 data taking period will also be discussed.
Author
Zaida Conesa del Valle
(CERN)
