  In these proceedings we discuss the measurement of Bose-Einstein momentum
correlation function of pairs of charged hadrons in PbPb collisions at 5.02
TeV. We describe the measured correlations with correlation functions derived
from Levy type source distributions. Using a transverse momentum and centrality
binning, we extract the correlation strength parameter lambda, Levy index alpha
and Levy scale parameter R as a function of pair transverse mass mT, for
various centralities.
