Speaker
Description
Heavy quarks (charm and beauty) are unique probes used to understand the properties of the QCD medium produced in ultra-relativistic heavy-ion collisions. Due to their large masses, they are created in the early stages of the collisions and experience the full evolution of Quark-Gluon Plasma (QGP). They interact with its consitutents and lose energy as they travel through the medium. Heavy quarks can be studied by measuring electrons coming from the semi-leptonic decays of heavy-flavour hadrons.
Two-particle angular correlation measurements are a powerful tool to study jet quenching especially in ${p}_{\rm{T}}$ regions where direct jet identification is difficult. In such measurements, we observe a near-side peak around $\Delta\varphi \approx 0$, formed by particles associated to a high-${p}_{\rm{T}}$ trigger particle, and an away-side peak around $\Delta\varphi \approx \pi$, formed by back-to-back dijets. By studying heavy-flavour angular correlations triggered by electrons from heavy-flavour hadron decays, we can access information about heavy-flavour jet quenching in the QGP. Near-side correlations can be studied to understand if the fragmentation and hadronization of heavy-quarks are modified by medium effects.
In this poster, we present the current status of the ALICE measurement of azimuthal angular correlations of high-${p}_{\rm{T}}$ heavy-flavour decay electrons with charged particles in Pb-Pb collisions at $\sqrt{{s}_{\rm{NN}}} = 5.02$ TeV from the LHC Run 2. The measurements from Pb-Pb collsions will be compared to p-Pb collisions at $\sqrt{{s}_{\rm{NN}}} = 5.02$ TeV.
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