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
Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA.
Phys Rev Lett. 2006 Jul 7;97(1):012301. doi: 10.1103/PhysRevLett.97.012301.
We report on measurements of directed flow as a function of pseudorapidity in Au + Au collisions at energies of square root of SNN = 19.6, 62.4, 130 and 200 GeV as measured by the PHOBOS detector at the BNL Relativistic Heavy Ion Collider. These results are particularly valuable because of the extensive, continuous pseudorapidity coverage of the PHOBOS detector. There is no significant indication of structure near midrapidity and the data surprisingly exhibit extended longitudinal scaling similar to that seen for elliptic flow and charged particle pseudorapidity density.
我们报告了通过布鲁克海文国家实验室相对论重离子对撞机上的PHOBOS探测器测量的，在质心能量平方根SNN = 19.6、62.4、130和200 GeV的金离子与金离子碰撞中，定向流作为赝快度函数的测量结果。由于PHOBOS探测器具有广泛、连续的赝快度覆盖范围，这些结果尤为珍贵。在中快度附近没有明显的结构迹象，并且数据令人惊讶地呈现出类似于椭圆流和带电粒子赝快度密度所观察到的扩展纵向标度。
