布鲁克海文国家实验室相对论重离子对撞机金金碰撞中椭圆流在大快度区间上的能量依赖性

Energy dependence of elliptic flow over a large pseudorapidity range in Au+Au collisions at the BNL relativistic heavy ion collider.

作者信息

Back B B, Baker M D, Ballintijn M, Barton D S, Betts R R, Bickley A A, Bindel R, Budzanowski A, Busza W, Carroll A, Chai Z, Decowski M P, García E, Gburek T, George N, Gulbrandsen K, Gushue S, Halliwell C, Hamblen J, Hauer M, Heintzelman G A, Henderson C, Hofman D J, Hollis R S, Hołyński R, Holzman B, Iordanova A, Johnson E, Kane J L, Katzy J, Khan N, Kucewicz W, Kulinich P, Kuo C M, Lin W T, Manly S, McLeod D, Mignerey A C, Nouicer R, Olszewski A, Pak R, Park I C, Pernegger H, Reed C, Remsberg L P, Reuter M, Roland C, Roland G, Rosenberg L, Sagerer J, Sarin P, Sawicki P, Seals H, Sedykh I, Skulski W, Smith C E, Stankiewicz M A, Steinberg P, Stephans G S F, Sukhanov A, Tang J-L, Tonjes M B, Trzupek A, Vale C, van Nieuwenhuizen G J, Vaurynovich S S, Verdier R, Veres G I, Wenger E, Wolfs F L H, Wosiek B, Woźniak K, Wuosmaa A H, Wysłouch B

机构信息

Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA.

出版信息

Phys Rev Lett. 2005 Apr 1;94(12):122303. doi: 10.1103/PhysRevLett.94.122303.

DOI:10.1103/PhysRevLett.94.122303

PMID:15903910

Abstract

This Letter describes the measurement of the energy dependence of elliptic flow for charged particles in Au+Au collisions using the PHOBOS detector at the Relativistic Heavy Ion Collider. Data taken at collision energies of square root of s(NN)=19.6, 62.4, 130, and 200 GeV are shown over a wide range in pseudorapidity. These results, when plotted as a function of eta(')=|eta|-y(beam), scale with approximate linearity throughout eta('), implying no sharp changes in the dynamics of particle production as a function of pseudorapidity or increasing beam energy.

摘要

这封信描述了使用相对论重离子对撞机上的PHOBOS探测器测量金金碰撞中带电粒子椭圆流的能量依赖性。在质心能量平方根s(NN)=19.6、62.4、130和200 GeV下获取的数据在很宽的赝快度范围内展示。这些结果，当绘制成作为η(')=|η|-y(束流)的函数时，在整个η(')范围内近似呈线性比例关系，这意味着粒子产生动力学作为赝快度或增加束流能量的函数没有急剧变化。