Temperature and fluid velocity on the freeze-out surface from pi, K, and p spectra in pp, p-Pb, and Pb-Pb collisions
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- PhysRevC.101.014910
Final published version, 527 KB, PDF document
We present a new approach to take into account resonance decays in the blast-wave model fits of identified hadron spectra. Thanks to precalculated decayed particle spectra, we are able to extract, in a matter of seconds, the multiplicity dependence of the single freeze-out temperature T-fo, average fluid velocity , velocity exponent n, and the volume dV/dy of an expanding fireball. In contrast to blast-wave fits without resonance feed-down, our approach results in a freeze-out temperature of T-fo approximate to 150 MeV, which has only weak dependence on multiplicity and collision system. Finally, we discuss separate chemical and kinetic freeze-outs separated by partial chemical equilibrium.
Original language | English |
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Article number | 014910 |
Journal | Physical Review C |
Volume | 101 |
Issue number | 1 |
Number of pages | 8 |
ISSN | 2469-9985 |
DOIs | |
Publication status | Published - 17 Jan 2020 |
- MULTIPLICITY DEPENDENCE, QCD, MOMENTUM, KAON, FLOW
Research areas
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