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We present a new approach to take into account resonance decays in theblast-wave model fits of identified hadron spectra. Thanks to pre-calculateddecayed particle spectra, we are able to extract, in a matter of seconds, themultiplicity dependence of the single freeze-out temperature $T_{\rm fo}$,average fluid velocity $\left<\beta_{\rm T}\right>$, velocity exponent $n$, andthe volume $dV/dy$ of an expanding fireball. In contrast to blast-wave fitswithout resonance feed-down, our approach results in a freeze-out temperatureof $T_{\rm fo}\approx 150\,\text{MeV}$, which has only weak dependence onmultiplicity and collision system. Finally, we discuss separate chemical andkinetic freeze-outs separated by partial chemical equilibrium.

Temperature and fluid velocity on the freeze-out surface from $\pi$, $K$, $p$ spectra in pp, p--Pb and Pb--Pb collisions