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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Dokumenter
- PhysRevC.101.014910
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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.
Originalsprog | Engelsk |
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Artikelnummer | 014910 |
Tidsskrift | Physical Review C |
Vol/bind | 101 |
Udgave nummer | 1 |
Antal sider | 8 |
ISSN | 2469-9985 |
DOI | |
Status | Udgivet - 17 jan. 2020 |
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