Size of the freeze-out source in high energy heavy ion collisions

SHAN Lian-Qiang; WU Feng-Juan; GUAN Hui-Jun; ZHANG Jing-Bo; TANG Gui-Xin; HUO Lei

doi:10.1088/1674-1137/33/5/008

Chinese Physics C> 2009, Vol. 33> Issue(5) : 359-363 DOI: 10.1088/1674-1137/33/5/008

Size of the freeze-out source in high energy heavy ion collisions

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Abstract：
Based on a hydro-inspired azimuthally symmetric emission function, we analyze the HBT radius R_s and the single-particle transverse momentum spectra in Au+Au collisions measured by the STAR Collaboration at √s_NN=200 GeV. The results show that consistent assumptions about transverse density (and/or flow profile) in the calculation of the HBT radius R_s and single-particle spectral analyses play an important role for understanding the size of the freeze-out source.

References

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SHAN Lian-Qiang, WU Feng-Juan, GUAN Hui-Jun, ZHANG Jing-Bo, TANG Gui-Xin and HUO Lei. Size of the freeze-out source in high energy heavy ion collisions[J]. Chinese Physics C, 2009, 33(5): 359-363. doi: 10.1088/1674-1137/33/5/008

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Received: 2008-08-18
Revised: 2008-11-06

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沈阳化工大学材料科学与工程学院沈阳 110142

Size of the freeze-out source in high energy heavy ion collisions

Corresponding author: HUO Lei,

Received Date: 2008-08-18
Accepted Date: 2008-11-06
Available Online: 2009-05-05

Abstract:

Based on a hydro-inspired azimuthally symmetric emission function, we analyze the HBT radius R_s and the single-particle transverse momentum spectra in Au+Au collisions measured by the STAR Collaboration at √s_NN=200 GeV. The results show that consistent assumptions about transverse density (and/or flow profile) in the calculation of the HBT radius R_s and single-particle spectral analyses play an important role for understanding the size of the freeze-out source.