Energy dependence of intermittency for charged hadrons in Au+Au collisions at RHIC
Density fluctuations near the QCD critical point can be probed via an intermittency analysis in relativistic heavy-ion collisions. We report the first measurement of intermittency in Au+Au collisions at $\sqrt{s{NN}}$ = 7.7-200 GeV measured by the STAR experiment at the Relativistic Heavy Ion Collid...
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Published in | Physics letters. B Vol. 845 |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
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United States
Elsevier
04.09.2023
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Abstract | Density fluctuations near the QCD critical point can be probed via an intermittency analysis in relativistic heavy-ion collisions. We report the first measurement of intermittency in Au+Au collisions at $\sqrt{s{NN}}$ = 7.7-200 GeV measured by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The scaled factorial moments of identified charged hadrons are analyzed at mid-rapidity and within the transverse momentum phase space. We observe a power-law behavior of scaled factorial moments in Au+Au collisions and a decrease in the extracted scaling exponent (ν) from peripheral to central collisions. The ν is consistent with a constant for different collisions energies in the mid-central (10-40%) collisions. Moreover, the ν in the 0-5% most central Au+Au collisions exhibits a non-monotonic energy dependence that reaches a minimum around $\sqrt{s{NN}}$ = 27 GeV. The physics implications on the QCD phase structure are discussed. |
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AbstractList | Density fluctuations near the QCD critical point can be probed via an intermittency analysis in relativistic heavy-ion collisions. We report the first measurement of intermittency in Au+Au collisions at $\sqrt{s{NN}}$ = 7.7-200 GeV measured by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The scaled factorial moments of identified charged hadrons are analyzed at mid-rapidity and within the transverse momentum phase space. We observe a power-law behavior of scaled factorial moments in Au+Au collisions and a decrease in the extracted scaling exponent (ν) from peripheral to central collisions. The ν is consistent with a constant for different collisions energies in the mid-central (10-40%) collisions. Moreover, the ν in the 0-5% most central Au+Au collisions exhibits a non-monotonic energy dependence that reaches a minimum around $\sqrt{s{NN}}$ = 27 GeV. The physics implications on the QCD phase structure are discussed. |
Author | Ray, R. L. Huang, T. Zurek, M. Cai, X. Z. Ullrich, T. Shi, Y. Sumbera, M. Xiao, Z. G. Liu, Z. Kiselev, A. Wang, J. Westfall, G. D. Dhamija, A. Hu, C. Pan, J. Suaide, A. A.P. Knospe, A. G. Zhang, Z. J. Leung, Y. H. Pandey, A. K. Wang, Z. Pruthi, N. K. Putschke, J. Xu, N. Ghimire, N. Harabasz, S. Chang, Z. Nie, M. Wieman, H. Yang, Y. Dale-Gau, G. Mi, K. Nishitani, R. Aggarwal, I. Sharma, S. R. Feng, C. J. Pawlik, B. Wang, Y. Nam, J. D. Seck, F. -J. Chen, D. Zhang, S. Drachenberg, J. L. Liu, L. Stringfellow, B. Galatyuk, T. Schmitz, N. Tamis, A. Luo, X. F. Perkins, C. Stefaniak, M. Bhatta, S. Bairathi, V. Kang, K. Li, C. Todoroki, T. Ko, H. S. Chatterjee, A. Liang, Y. Okubo, K. Anderson, D. M. Stanislaus, T. D.S. Jia, J. Zhu, X. Wilks, G. Crawford, H. J. Huang, S. L. Adams, J. R. Shen, D. Y. Kosarzewski, L. K. Chakaberia, I. Ljubicic, T. Pluta, J. Jacobs, W. W. Abdulhamid, M. I. Holub, L. Wissink, S. W. Kelsey, M. Voloshin, S. A. Adam, J. Ceska, J. Mazer, J. A. Tu, Z. Cebra, D. Hu, Q. Barish, K. Kunnawalkam Elayavalli, R. Seto, R. Rosales Aguilar, M. A. Sun, C. He, Y. Robertson |
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Title | Energy dependence of intermittency for charged hadrons in Au+Au collisions at RHIC |
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