Temperature and fluid velocity on the freeze-out surface from pi, K, and p spectra in pp, p-Pb, and Pb-Pb collisions
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Temperature and fluid velocity on the freeze-out surface from pi, K, and p spectra in pp, p-Pb, and Pb-Pb collisions. / Mazeliauskas, Aleksas; Vislavicius, Vytautas.
In: Physical Review C, Vol. 101, No. 1, 014910, 17.01.2020.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Temperature and fluid velocity on the freeze-out surface from pi, K, and p spectra in pp, p-Pb, and Pb-Pb collisions
AU - Mazeliauskas, Aleksas
AU - Vislavicius, Vytautas
PY - 2020/1/17
Y1 - 2020/1/17
N2 - 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.
AB - 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.
KW - MULTIPLICITY DEPENDENCE
KW - QCD
KW - MOMENTUM
KW - KAON
KW - FLOW
U2 - 10.1103/PhysRevC.101.014910
DO - 10.1103/PhysRevC.101.014910
M3 - Journal article
VL - 101
JO - Physical Review C
JF - Physical Review C
SN - 2469-9985
IS - 1
M1 - 014910
ER -
ID: 248291228