Spatial Parameter from Two-pion Interferometry

Huo Lei; Jiang Yuzhen; Wang Shan; Zhang Weining; Liu Yiming; D. Keane; S. Y. Chu; S. Y. Fung

Chinese Physics C> 1992, Vol. 16> Issue(S3) : 297-303

Spatial Parameter from Two-pion Interferometry

Huo Lei ¹ ,
Jiang Yuzhen ¹ ,
Wang Shan ¹ ,
Zhang Weining ¹ ,
Liu Yiming ¹ ,
D. Keane ² ,
S. Y. Chu ³ ,
S. Y. Fung ³

1 Department of Physics, Harbin Institute of Technology;Harbin, Heilongjiang, China;
2 Department of Physics, Kent State University, Kent, Ohio, U. S. A.;
3 Department of Physics, University of California, Riverside, California. U. S. A

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Abstract：
Comparing directly the correlation functions from different source density distributions, we propose that the average radius of the source obtained from two-pion interferometry analysis is quantity to describe the spatial size of the source. In the comparison the source spatial parameters from different correlation functions, the average radius of the source is a superior standard parameter to the root-mean-square radius suggested by Bartke and Kowalski, and is superior to the factor suggested by Goldhaber et al. A systematic study of the results from different heavy ion experiments demonstrates that a more reasonable result can be obtained by utilizing the average radius as a standard for comparison.

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Huo Lei, Jiang Yuzhen, Wang Shan, Zhang Weining, Liu Yiming, D. Keane, S. Y. Chu and S. Y. Fung. Spatial Parameter from Two-pion Interferometry[J]. Chinese Physics C, 1992, 16(S3): 297-303.

Huo Lei, Jiang Yuzhen, Wang Shan, Zhang Weining, Liu Yiming, D. Keane, S. Y. Chu and S. Y. Fung. Spatial Parameter from Two-pion Interferometry[J]. Chinese Physics C, 1992, 16(S3): 297-303. shu

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Received: 1991-10-11

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Supported in part by the National Natural Science Foundation of China, the U.S. Department of Energy, and the U.S. National Science Foundation.

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Spatial Parameter from Two-pion Interferometry

1 Department of Physics, Harbin Institute of Technology;Harbin, Heilongjiang, China;
2 Department of Physics, Kent State University, Kent, Ohio, U. S. A.;
3 Department of Physics, University of California, Riverside, California. U. S. A

Received Date: 1991-10-11

Fund Project: Supported in part by the National Natural Science Foundation of China, the U.S. Department of Energy, and the U.S. National Science Foundation.

Abstract: Comparing directly the correlation functions from different source density distributions, we propose that the average radius of the source obtained from two-pion interferometry analysis is quantity to describe the spatial size of the source. In the comparison the source spatial parameters from different correlation functions, the average radius of the source is a superior standard parameter to the root-mean-square radius suggested by Bartke and Kowalski, and is superior to the factor suggested by Goldhaber et al. A systematic study of the results from different heavy ion experiments demonstrates that a more reasonable result can be obtained by utilizing the average radius as a standard for comparison.