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

REN Yan-Yu; Efaaf M; ZHANG Wei-Ning

doi:10.1088/1674-1137/34/4/010

Chinese Physics C> 2010, Vol. 34> Issue(4) : 472-478 DOI: 10.1088/1674-1137/34/4/010

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

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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 R_s and R_o indicate that both the source size and the duration of pion emission decrease when the freeze-out temperature increases. The values of R_o/R_s 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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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: Efaaf M,

Received Date: 2009-06-10

Accepted Date: 2009-07-07

Available Online: 2010-04-05

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 R_s and R_o indicate that both the source size and the duration of pion emission decrease when the freeze-out temperature increases. The values of R_o/R_s 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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Inhomogeneous space-time structure and two-pion interferometry in NEXSPHERIO model

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