Inhomogeneous space-time structure and two-pion interferometry in NEXSPHERIO model

  • We examine the space-time structure of particle-emitting source and two-pion interferometry in a smoothed hydrodynamic model with fluctuating initial conditions. An equation of state with a crossover transition between quark-gluon plasma and hadronic gas is adopted in the description of the system evolution. We find that the fluctuating initial conditions lead to inhomogeneous particle-emitting sources. The interferometry results of Rs and Ro indicate that both the source size and the duration of pion emission decrease when the freeze-out temperature increases. The values of Ro/Rs obtained by our simulated two-pion interferometry are consistent with the previous results of smoothed particle hydrodynamics, and smaller than those calculated in usual hydrodynamic models.

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REN Yan-Yu, Efaaf M and ZHANG Wei-Ning. Inhomogeneous space-time structure and two-pion interferometry in NEXSPHERIO model[J]. Chinese Physics C, 2010, 34(4): 472-478. doi: 10.1088/1674-1137/34/4/010
REN Yan-Yu, Efaaf M and ZHANG Wei-Ning. Inhomogeneous space-time structure and two-pion interferometry in NEXSPHERIO model[J]. Chinese Physics C, 2010, 34(4): 472-478.  doi: 10.1088/1674-1137/34/4/010 shu
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Received: 2009-06-10
Revised: 2009-07-07
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Inhomogeneous space-time structure and two-pion interferometry in NEXSPHERIO model

    Corresponding author: Efaaf M,

Abstract: 

We examine the space-time structure of particle-emitting source and two-pion interferometry in a smoothed hydrodynamic model with fluctuating initial conditions. An equation of state with a crossover transition between quark-gluon plasma and hadronic gas is adopted in the description of the system evolution. We find that the fluctuating initial conditions lead to inhomogeneous particle-emitting sources. The interferometry results of Rs and Ro indicate that both the source size and the duration of pion emission decrease when the freeze-out temperature increases. The values of Ro/Rs obtained by our simulated two-pion interferometry are consistent with the previous results of smoothed particle hydrodynamics, and smaller than those calculated in usual hydrodynamic models.

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