System size in relativistic heavy ion collisions

WANG Yang-Yang; ZHAO Lin-Jie; YUAN Zhong-Sheng; ZHANG Dan-Dan; FANG Wei; XU Ming-Mei

doi:10.1088/1674-1137/35/3/010

Chinese Physics C> 2011, Vol. 35> Issue(3) : 264-268 DOI: 10.1088/1674-1137/35/3/010

System size in relativistic heavy ion collisions

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Abstract：
System size is more than a geometrical quantity in relativistic heavy ion collisions; it is closely related to evolution process, i.e. a different system size corresponds to a different evolution process, and whether QGP is produced depends on the system size. We propose that the system size should be under the same level when comparing the measurements from different colliding nuclei. The equivalence of the peripheral collisions of Au-Au and the central collisions of smaller nuclei is studied using the Monte Carlo method. Comparing the transverse overlapping area of the colliding nuclei, the number of participant nucleons and the number of nucleon-nucleon binary collisions in various colliding nuclei, we give an estimate of the correspondence in system size. This is helpful in the experimental comparison of the measurements from different colliding nuclei.

References

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WANG Yang-Yang, ZHAO Lin-Jie, YUAN Zhong-Sheng, ZHANG Dan-Dan, FANG Wei and XU Ming-Mei. System size in relativistic heavy ion collisions[J]. Chinese Physics C, 2011, 35(3): 264-268. doi: 10.1088/1674-1137/35/3/010

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Received: 2010-06-12
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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

System size in relativistic heavy ion collisions

Received Date: 2010-06-12

Accepted Date: 2010-06-12

Available Online: 2011-03-05

Abstract: System size is more than a geometrical quantity in relativistic heavy ion collisions; it is closely related to evolution process, i.e. a different system size corresponds to a different evolution process, and whether QGP is produced depends on the system size. We propose that the system size should be under the same level when comparing the measurements from different colliding nuclei. The equivalence of the peripheral collisions of Au-Au and the central collisions of smaller nuclei is studied using the Monte Carlo method. Comparing the transverse overlapping area of the colliding nuclei, the number of participant nucleons and the number of nucleon-nucleon binary collisions in various colliding nuclei, we give an estimate of the correspondence in system size. This is helpful in the experimental comparison of the measurements from different colliding nuclei.

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