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| 題名: | Measurement of higher cumulants of net-charge multiplicity distributions in Au + Au collisions at sNN =7.7-200 GeV |
| 作者: | 彭仁傑;Ajitanand, N. N.;Asano, H.;Baublis, V.;Baumann, C.;Baumgart, S.;Berdnikov, Y.;Blau, D. S.;Boyle, K.;Bryslawskyj, J.;Buesching, H.;Chujo, T.;Cole, B. A.;Crossette, N.;David, G.;Deshpande, A.;Franz, A.;Fusayasu, T.;Gainey, K.;Goto, Y.;Greene, S. V.;Grosse Perdekamp, M.;Hachiya, T.;Haggerty, J. S.;Hamblen, J.;Hashimoto, K.;Heffner, M.;Hemmick, T. K.;Hohlmann, M.;Ichihara, T.;Isobe, T.;Issah, M.;Jacak, B. V.;Jumper, D. S.;Kamin, J.;Kang, J. H.;Kempel, T.;Key, J. A.;Khandai, P. K.;Kim, B. I.;Kim, D. J.;Kim, E.-J.;Kim, K.-B.;Kim, Y.-J.;Kim, Y. K.;Kline, P.;Kotov, D.;Kunde, G. J.;Kurita, K.;Kwon, Y.;Kyle, G. S.;Lacey, R.;Lai, Y. S.;Lajoie, J. G.;Lee, D. M.;Leitgab, M.;Li, X.;Linden Levy, L. A.;Mendoza, M.;Miyachi, Y.;Morrison, D. P.;Nakamura, K. R.;Nakano, K.;Niida, T.;Novitzky, N.;O'Brien, E.;Onuki, Y.;Pantuev, V.;Park, S. K.;Park, W. J.;Pei, H.;Pereira, H.;Peresedov, V.;Pisani, R. P.;Purschke, M. L.;Rak, J.;Richardson, E.;Rosati, M.;Rosen, C. A.;Rosendahl, S. S. E.;Ružička, P.;Sen, A.;Sharma, D.;Shigaki, K.;Silva, C. L.;Singh, V.;Soltz, R. A.;Steinberg, P.;Stenlund, E.;Tanida, K.;Taranenko, A.;van Hecke, H. W.;Wei, F.;Wright, R. M.;Wysocki, M.;Xia, B.;Yanovich, A.;You, Z.;Young, G. R.;Zajc, W. A.;Zelenski, A. |
| 貢獻者: | 高能與強場物理研究中心 |
| 關鍵詞: | Au + Au;Collisions;Cumulants;net-charge;Relativistic Heavy Ion Collider |
| 日期: | 2016-01-19 |
| 上傳時間: | 2026-04-23 12:03:49 (UTC+8) |
| 出版者: | American Physical Society;United States: APS |
| 摘要: | 摘要： Our report presents the measurement of cumulants (Cn,n=1,...,4) of the net-charge distributions measured within pseudorapidity (|η|<0.35) in Au+Au collisions at √sNN=7.7–200GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider. The ratios of cumulants (e.g., C1/C2, C3/C1) of the net-charge distributions, which can be related to volume independent susceptibility ratios, are studied as a function of centrality and energy. These quantities are important to understand the quantum-chromodynamics phase diagram and possible existence of a critical end point. The measured values are very well described by expectation from negative binomial distributions. We do not observe any nonmonotonic behavior in the ratios of the cumulants as a function of collision energy. These measured values of C1/C2 and C3/C1 can be directly compared to lattice quantum-chromodynamics calculations and thus allow extraction of both the chemical freeze-out temperature and the baryon chemical potential at each center-of-mass energy. Moreover, the extracted baryon chemical potentials are in excellent agreement with a thermal-statistical analysis model.
出版者： United States: APS
出版日期： 2016-01-19
出處： Physical review. C, 2016-01, Vol.93 (1), Article 011901
識別號： ISSN: 2469-9985
識別號： EISSN: 2469-9993
識別號： DOI: 10.1103/PhysRevC.93.011901 |
| 顯示於類別: | [高能與強場物理研究中心] 期刊論文
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