  The transverse momentum distributions of final-state particles are very
important for high-energy collision physics. In this work, we investigate and
meson distributions in the framework of a particle-production source, where
Tsallis statistics are consistently integrated. The results are in good
agreement with the experimental data of proton-proton ( ) and proton-lead (
-Pb) collisions at LHC energies. The temperature of the emission source and the
nonequilibrium degree of the collision system are extracted.
