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Abdulhamid, M. I.; Adam, J.; Adams, J. R.; Bellwied, R.; Cai, X. Z.; Caines, H.; Calderón de la Barca Sánchez, M.; Ceska, J.; Chatterjee, A.; Chen, J.; Chen, Z.; Choudhury, S.; Chu, X.; Crawford, H. J.; Dale-Gau, G.; Deppner, I. M.; Eppley, G.; Evdokimov, O.; Fazio, S.; Feng, Y.; Flor, F. A.; Gao, T.; Geurts, F.; Ghimire, N.; Guryn, W.; Harrison-Smith, H.; Huang, H.; Humanic, T. J.; Isshiki, M.; Judd, E. G.; Kagamaster, S.; Kauder, K.; Khyzhniak, Y. V.; Kimelman, B.; Kincses, D.; Kisel, I.; Lacey, R.; Landgraf, J. M.; Li, Z.; Liang, X.; Liu, F.; Liu, H.; Liu, Y.; Luo, X. F.; Ma, L.; Markert, C.; Matis, H. S.; Mioduszewski, S.; Mohanty, B.; Mondal, M. M.; Nagy, M. I.; Nain, A. S.; Nam, J. D.; Nelson, J. M.; Nigmatkulov, G.; Nonaka, T.; Odyniec, G.; Okubo, K.; Pani, T.; Pawlik, B.; Prozorova, V.; Qin, Z.; Radhakrishnan, S. K.; Reed, R.; Ruan, L.; Schmidke, W. B.; Seck, F. -J.; Seger, J.; Shah, N.; Sharma, R.; Sheikh, A. I.; Shen, D. Y.; Shi, Y.; Shou, Q. Y.; Singh, J.; Stanislaus, T. D.S.; Stringfellow, B.; Su, Y.; Tang, Z.; Tlusty, D.; Todoroki, T.; Trentalange, S.; Truhlar, T.; Voloshin, S. A.; Wang, F.; Wang, J. S.; Wang, Y.; Wissink, S. W.; Xi, B.; Xiao, Z. G.; Xu, H.; Ye, Z.; Yi, L.; Zbroszczyk, H.; Zhang, D.; Zhang, S.; Zhang, Y.; Zhou, J.; Zhou, Y.; Zyzak, M.
Physics letters. B, 09/2023, Volume: 845Journal Article
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.
