  Transverse momentum spectra of different particles produced in mid-rapidity
interval in lead-lead (Pb-Pb) collisions with different centrality intervals,
measured by the ALICE Collaboration at center-of-mass energy per nucleon pair
$\sqrt{s_{NN}}=2.76$ TeV, are conformably and approximately described by the
Tsallis distribution. The dependences of parameters (effective temperature,
entropy index, and normalization factor) on event centrality and particle rest
mass are obtained. The source temperature at the kinetic freeze-out is obtained
to be the intercept in the linear relation between effective temperature and
particle rest mass, while the particle transverse flow velocity is
approximately extracted to be the slope in the linear relation between mean
transverse momentum and particle rest mass. It is shown that the source
temperature increases with increase of particle rest mass, which exhibits an
evidence of mass dependent differential kinetic freeze-out scenario or multiple
kinetic freeze-out scenario.
