Speaker
Dr
Renu Bala
(University of Jammu (IN))
Description
Heavy quarks (charm and beauty) are effective probes to investigate the properties of hot and dense QCD matter created in heavy-ion
collisions as they are produced in partonic scattering processes occuring in the early stages of the collision. Due to their long life time, they probe all the stages of the medium evolution and they interact with it losing energy via gluon radiation and elastic collisions with in-medium constituents. The measurement of the nuclear modification factor of the D-mesons provides a key test of parton energy-loss models. These models predict that beauty quarks lose less energy than charm quarks and the latter experience less in-medium energy loss than light quarks and gluons.
D-meson ($\rm D^{0}$, $\rm D^{+}$, $\rm D^{*+}$ and $\rm D_{s}^{+}$) production has been measured with ALICE in pp, Pb-Pb and p-Pb collisions at different energies. In particular, we will present the measurement of the $\rm D^{+}$ production in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV performed with the ALICE detector at central rapidity through the exclusive reconstruction of the hadronic decay channel $\rm D^{+} \rightarrow K^{-}$ $\pi ^{+} \pi^{+}$. The results of the measurement of the nuclear modification factor of $\rm D^{+}$ as a function of transverse momentum and centrality will also be presented.
| On behalf of collaboration: | ALICE |
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Primary author
Dr
Renu Bala
(University of Jammu (IN))
