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Characterizing variable for the crit

時間:2023-04-28 19:26:11 數理化學論文 我要投稿
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Characterizing variable for the critical point in momentum space

The possible experimentally observable signal in momentum space for the critical point, which is free from the contamination of statistical fluctuations, is discussed. It is shown that the higher order scaled moment of transverse momentum can serve as an appropriate signal for the critical point, provided the transverse momentum distribution has a sudden change when energy increases passing through this point. A 2-D percolation model with a linear temperature gradient is constructed to check this suggestion. A sudden change of third order scaled moment of transverse momentum is observed.

作 者: DU Jia-Xin KE Hong-Wei XU Ming-Mei LIU Lian-Shou   作者單位: DU Jia-Xin,KE Hong-Wei,XU Ming-Mei(Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China)

LIU Lian-Shou(Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China;Key Laboratory of Quark & Lepton Physics (Huazhong Normal University),Ministry of Education, Wuhan 430079, China) 

刊 名: 中國物理C(英文版)  ISTIC 英文刊名: CHINESE PHYSICS C  年,卷(期): 2009 33(8)  分類號: O4  關鍵詞: relative heavy ion collision   phase transition   critical end point   transverse momentum   scaled moments  

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