摘要
A new method is presented for measuring event-by-event fluctuations of elliptic flow(v_2)using first- order event planes.By studying the event-by-event distributions of v_2 observables and first-order event-plane observables,average flow(v_2)and event-by-event fluctuations with respect to that average can be separately determined,making appropriate allowance for the effects of finite multiplicity.The relation of flow fluctuations to eccentricity fluctuations in the initial-state participant region,as well as detector acceptance effects,are discussed.
A new method is presented for measuring event-by-event fluctuations of elliptic flow （v2） using first- order event planes. By studying the event-by-event distributions of v2 observables and first-order event-plane observables, average flow （v2） and event-by-event fluctuations with respect to that average can be separately determined, making appropriate allowance for the effects of finite multiplicity. The relation of flow fluctuations to eccentricity fluctuations in the initial-state participant region, as well as detector acceptance effects, are discussed.
出处
《高能物理与核物理》
CSCD
北大核心
2007年第12期1165-1169,共5页
High Energy Physics and Nuclear Physics
关键词
椭圆流
脉动
重离子碰撞
事件平面
elliptic flow, fluctuation, event plane, heavy-ion collision
