Title : Study of jet fragmentation with particle correlations in Pb-Pb collisions by ALICE

Speaker : Beomsu Chang

Institute : University of Jyväskylä, Helsinki institute of Physics


Jet production in a hard-scattering of partons in relativistic heavy ion collisions is an important probe which helps to understand the properties
of the excited  QCD matter. In the heavy ion experiments at RHIC, it was observed that jets penetrating through the produced medium are suppressed.
Nowadays it is widely accepted that the "jet quenching" phenomenon signalizes creation of a new state of matter which is called a Quark Gluon Plasma
(QGP). Thus the study of the jet-properties modification induced by the excited nuclear medium is vital for the understanding of the QGP
properties. I will discuss an observation of an enhanced intra-jet yield of charged particles associated with the high-\pt{} trigger particle
($I_{\rm AA}$) in central \pbpb\ collisions at \snn=2.76 \tev\  which may be also interpreted as a hint of the modification of the fragmentation
function due to induced gluon radiation.