Two-Pion Interferometry at Small Relative Momentum Taking Account for Multi-Pion Correlations

CHEN Xiao-Fan; CHEN Zhi-Lai; YANG Xue-Dong; LI Zhu-Peng

Chinese Physics C> 2001, Vol. 25> Issue(2) : 149-153

Two-Pion Interferometry at Small Relative Momentum Taking Account for Multi-Pion Correlations

Department of Physics, Harbin Institute of Technology, Harbin 150001, China

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Abstract：
A general expression for nπ correlation function is given when there are multi-pion correlations in the choices of correlated nπ and uncorrelated nπ. Using this expression, the two-pion interferometry at small relative momentum which takes account for multi-pion correlations is studied, the relations between the pion source parameters from the two-pion interferometry and the three- pion interferometry are obtained analytically, and comparison is made with the experimental results of central relativistic heavy ion collisions 1.8 A GeV Ar+Pb.

References

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CHEN Xiao-Fan, CHEN Zhi-Lai, YANG Xue-Dong and LI Zhu-Peng. Two-Pion Interferometry at Small Relative Momentum Taking Account for Multi-Pion Correlations[J]. Chinese Physics C, 2001, 25(2): 149-153.

CHEN Xiao-Fan, CHEN Zhi-Lai, YANG Xue-Dong and LI Zhu-Peng. Two-Pion Interferometry at Small Relative Momentum Taking Account for Multi-Pion Correlations[J]. Chinese Physics C, 2001, 25(2): 149-153. shu

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Received: 1999-11-22
Revised: 1900-01-01

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