流的偏心率——在相对论性重离子碰撞过程中初态物质的椭圆流涨落和横向局域化证据(英文)  

Eccentricities of Flow-Elliptic Flow Fluctuations and Evidence for Transverse Localization in the Initial State of the Matter in Relativistic Heavy Ion Collisions

作　　者：S.Manly B.Alver B.B.Back M.D.Baker M.Ballintijn D.S.Barton R.R.Betts R.Bindel W.Busza Z.Chai V.Chetluru E.Garcfa T.Gburek K.Gulbrandsen J.Hamblen I.Harnarine C.Henderson D.J.Hofman R.S.Hollis R.Hoiynski B.Holzman A.Iordanova J.L.Kane P.Kulinich C.M.Kuo W.Li W.T.Lin C.Loizides S.Manly A.C.Mignerey R.Nouicer A.Olszewski R.Pak C.Reed E.Richardson C.Roland G.Roland J.Sagerer I.Sedykh C.E.Smith M.A.Stankiewicz P.Steinberg G.S.F.Stephans A.Sukhanov A.Szostak M.B.Tonjes A.Trzupek G.J.van Nieuwenhuizen S.S.Vaurynovich R.Verdier G.I.Veres P.Walters E.Wenger D.Willhelm F.L.H.Wolfs B.Wosiek K.Wozniak S.Wyngaardt B.Wyslouch 

机构地区：[1]Physics Division, Argonne National Laboratory, Argonne, IL 60439-4843, USA [2]Chemistry and C-A Departments, Brookhaven National Laboratory, Upton, NY 11973-5000, USA [3]Institute of Nuclear Physics PAN,Krakdw, Poland [4]Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA [5]Department of Physics, National Central University, Chung-Li [6]Department of Physics, University of Illinois at Chicago, Chicago, IL 60607-7059, USA [7]Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA [8]Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA

出　　处：《高能物理与核物理》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

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.

关 键 词：横向定位 RHIC 相对论重离子碰撞 原始态 流量波动 椭圆流 

分 类 号：O572.21[理学—粒子物理与原子核物理]