Three-Pion Interferometry at Small Relative Momentum in Relativistic Heavy-Ion Collisions

Chen Xiaofan

Chinese Physics C> 1998, Vol. 22> Issue(10) : 903-909

Three-Pion Interferometry at Small Relative Momentum in Relativistic Heavy-Ion Collisions

Chen Xiaofan ^,

Department of Physics, Harbin Institute of Technology, Harbin 150006

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Abstract：
With the power series expansion of the three-pion correlation function at small relative momentum, the relation between the three-pion correlation and root-mean-square radius of pion source is Obtained analytically. The relations between the space parameters of the pion source from 3π interferometry and 2π interferometry are also obtained when multi-pion correlation in three-pion events is or is not considered,The distortion of the two-pion coherence factor caused by the multi-pion correlation in three-pion events is calculated. And comparison is made between the results of 2π interferometry analyses at small relative momentum and the experimental measurements of the central relativistic heavy-ion collision 1.8A GeV Ar+Pb.

References

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Chen Xiaofan. Three-Pion Interferometry at Small Relative Momentum in Relativistic Heavy-Ion Collisions[J]. Chinese Physics C, 1998, 22(10): 903-909.

Chen Xiaofan. Three-Pion Interferometry at Small Relative Momentum in Relativistic Heavy-Ion Collisions[J]. Chinese Physics C, 1998, 22(10): 903-909. shu

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Received: 1900-01-01
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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

Three-Pion Interferometry at Small Relative Momentum in Relativistic Heavy-Ion Collisions

Corresponding author: Chen Xiaofan,

Department of Physics, Harbin Institute of Technology, Harbin 150006

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1998-10-05

Abstract: With the power series expansion of the three-pion correlation function at small relative momentum, the relation between the three-pion correlation and root-mean-square radius of pion source is Obtained analytically. The relations between the space parameters of the pion source from 3π interferometry and 2π interferometry are also obtained when multi-pion correlation in three-pion events is or is not considered,The distortion of the two-pion coherence factor caused by the multi-pion correlation in three-pion events is calculated. And comparison is made between the results of 2π interferometry analyses at small relative momentum and the experimental measurements of the central relativistic heavy-ion collision 1.8A GeV Ar+Pb.

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Three-Pion Interferometry at Small Relative Momentum in Relativistic Heavy-Ion Collisions

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