CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
BEAM ENERGY DEPENDENCE OF EVENT-BY-EVENT HADRON RATIO FLUCTUATIONS FROM Au plus Au COLLISIONS AT RHIC
Tian, J(田健)
2012
Conference NameConference on Strangeness in Quark Matter
Source PublicationSTRANGENESS IN QUARK MATTER 2011
Conference DateSEP 18-24, 2011
Conference PlaceKrakow, POLAND
AbstractWe 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.
ISSN1899-2358
Indexed BySCI
Funding Project应物所课题组
Language英语
Document Type会议论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13421
Collection中科院上海应用物理研究所2011-2019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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