Two-particle Bose-Einstein momentum correlation functions for charged-hadron pairs in lead-lead collisions at a center-of-mass energy per nucleon pair of TeV are studied. The data sample, containing events corresponding to an integrated luminosity of 0.607 , was collected by the CMS experiment in 2018. The experimental results are discussed in terms of a Levy-type source distribution. The parameters of this distribution are extracted as functions of particle pair average transverse mass and collision centrality. These parameters include the correlation strength parameter, the Levy index or shape parameter (), and the Levy scale parameter (). The source shape, characterized by , is found to be neither Cauchy nor Gaussian, implying the need for a full Levy analysis. Similarly to what was previously found for systems characterized by Gaussian source radii, a hydrodynamical scaling is also observed for the Levy parameter.
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