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| BEAM ENERGY DEPENDENCE OF EVENT-BY-EVENT HADRON RATIO FLUCTUATIONS FROM Au plus Au COLLISIONS AT RHIC | |
| Tian, J(田健） | |
| 2012 | |
| Conference Name | Conference on Strangeness in Quark Matter |
| Source Publication | STRANGENESS IN QUARK MATTER 2011 |
| Conference Date | SEP 18-24, 2011 |
| Conference Place | Krakow, POLAND |
| Abstract | We present measurements of event-by-event fluctuations on hadron multiplicity ratios (K/pi, p/pi, K/p) in Au+Au collisions at root s(NN) = 7.7, 11.5, 19.6, 39 and 200 GeV using the STAR detector at RHIC. The magnitudes of dynamical fluctuations sigma(dyn) for p/pi and K/p ratios change smoothly from a larger negative value at root s(NN) = 7.7 GeV to a smaller negative value at 200 GeV while that for the K/pi ratios exhibits no significant beam energy dependence. We use a four-event mixing scheme as a reference to evaluate dynamical fluctuations related to pair production sigma(pair)(dyn) for the p/K, K/p, (p) over bar /p and K-/K+ ratios at root s(NN) = 200 GeV. We find that these pair-related fluctuations all exhibit a maximum at the mid-central collisions and decrease at the most peripheral and most central collisions. |
| ISSN | 1899-2358 |
| Indexed By | SCI |
| Funding Project | 应物所课题组 |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/13421 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Recommended Citation GB/T 7714 | Tian, J. BEAM ENERGY DEPENDENCE OF EVENT-BY-EVENT HADRON RATIO FLUCTUATIONS FROM Au plus Au COLLISIONS AT RHIC[C],2012. |
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| BEAM ENERGY DEPENDEN（313KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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