Initial energy density of gluons produced in very-high-energy nuclear collisions
Initial energy density of gluons produced in very-high-energy nuclear collisions
复制标题
极高能核碰撞中产生的胶子的初始能量密度
DOI：
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复制
发表时间：
1999
影响因子：
8.6
通讯作者：
R. Venugopalan
中科院分区：
文献类型：
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作者：
A. Krasnitz;R. Venugopalan
在甚高能核碰撞中，单位面积单位快度产生的胶子的初始能量（dE/L2）/deta等于f（g（2）L）（g（2））（3）/g（2），其中（2）与碰撞核的单位面积胶子密度成正比。对于SU（2）规范理论，f（g（2）L）的非微扰计算表明，对于小g（2）L，f（g（2）L）变化很快，但变化仅为约25%，从0.208+/-0.004到0.257+/-0. 005，范围35.36- 296.98 g（2）L。这包括相对论重离子对撞机（RHIC）和大型强子对撞机（LHC）的碰撞相关范围。外推到SU（3），我们估计了RHIC和LHC中心区Au-Au碰撞的dE/deta。
In very-high-energy nuclear collisions, the initial energy of produced gluons per unit area per unit rapidity, (dE/L2)/deta, is equal to f(g(2)&mgr;L) (g(2)&mgr;)(3)/g(2), where &mgr;(2) is proportional to the gluon density per unit area of the colliding nuclei. For an SU(2) gauge theory, a nonperturbative computation of f(g(2)&mgr;L) shows that it varies rapidly for small g(2)&mgr;L but varies only by approximately 25%, from 0.208+/-0.004 to 0.257+/-0. 005, for a wide range 35.36- 296.98 in g(2)&mgr;L. This includes the range relevant for collisions at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC). Extrapolating to SU(3), we estimate dE/deta for Au-Au collisions in the central region at RHIC and LHC.