摘要
Recent measurements of event-by-event elliptic flow in Au+Au collisions at S_(NN)^(1/2)=200GeV exhibit large relative fluctuations of about 40%—50%.The data are well described by fluctuations in the shape of the initial collision region,as estimated event-by-event with the participant eccentricity using Glauber Monte Carlo.These results,combined with the demonstrated participant eccentricity scaling of the elliptic flow across nuclear species,constitute evidence of transverse granularity in the initial matter production in these collisions.
Recent measurements of event-by-event elliptic flow in Au＋Au collisions at √sNN = 200GeV exhibit large relative fluctuations of about 40%-50%. The data are well described by fluctuations in the shape of the initial collision region, as estimated event-by-event with the participant eccentricity using Glauber Monte Carlo. These results, combined with the demonstrated participant eccentricity scaling of the elliptic flow across nuclear species, constitute evidence of transverse granularity in the initial matter production in these collisions.
出处
《高能物理与核物理》
CSCD
北大核心
2007年第12期1133-1136,共4页
High Energy Physics and Nuclear Physics
基金
Supported by U.S.DOE Grants DE-AC02-98CH10886,DE-FG02-93ER40802,DE-FG02-94ER40818,DE-FG02-94ER40865,DE-FG02-99ER41099,and DE-AC02-06CH11357
by U.S.NSF Grants 9603486,0072204,and 0245011
by Polish KBN Grant 1-P03B-062-27 (2004-2007)
by NSC of Taiwan Contract NSC 89-2112-M-008-024
by Hungarian OTKA Grant F049823
