标题:Disentangling flow and signals of Chiral Magnetic Effect in U plus U, Au plus Au and p plus Au collisions
作者:Tribedy, Prithwish; Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Aparin, A.; Arkhipkin, D. 更多
通讯作者:Tribedy, P
作者机构:[Tribedy, Prithwish] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA.; [Adamczyk, L.; Fulek, L.; Przybycien, M.; Sikora, R.] AGH Univ Sci & Tech 更多
会议名称:26th International Conference on Ultrarelativistic Nucleus-Nucleus Collissions (Quark Matter)
会议日期:FEB 05-11, 2017
来源:NUCLEAR PHYSICS A
出版年:2017
卷:967
页码:740-743
DOI:10.1016/j.nuclphysa.2017.05.078
关键词:CME; Three-particle correlations; A plus A and p plus A collisions
摘要:We present STAR measurements of the charge-dependent three-particle correlator gamma(a,b) = < cos(phi(a)(1) + phi(b)(2)-2 phi(3))>/v(2){2} and elliptic flow v(2){2} in U+U, Au+Au and p+Au collisions at RHIC. The difference Delta gamma = gamma(opposite sign)-gamma(same sign) measures charge separation across the reaction plane, a predicted signal of the Chiral Magnetic Effect (CME). Although charge separation has been observed, it has been argued that the measured separation can also be explained by elliptic flow related backgrounds. In order to separate the two effects we perform measurements of the gamma-correlator where background expectations differ from magnetic field driven effects. A differential measurement of gamma with the relative pseudorapidity (Delta eta)) between the first and second particles indicate that Delta gamma in peripheral A+A and p+A collisions are dominated by short-range correlations in A. However, a relatively wider component of the correlation in Delta eta tends to vanish the same way as projected magnetic field as predicted by MC-Glauber simulations.
收录类别:CPCI-S;SCIE
WOS核心被引频次:3
资源类型:会议论文
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