  In relativistic heavy-ion physics two-particle correlations provide a very
useful tool to investigate the Quark-Gluon Plasma (QGP). This observable is
sensitive to several of the properties of the QGP such as resonances,
interaction of partons with the medium and collective effects (e. g. elliptic
flow). In the present work, the correlation function between electrons from
heavy-flavour hadron decays and light hadrons was measured in pp and Pb-Pb
collisions (central and semi-central). Furthermore, in pp collisions the
relative beauty contribution to the total cross section of electrons from
heavy-flavour decays was estimated by comparing the measured correlation with
Monte-Carlo templates.
