Initial energy density of gluons produced in very-high-energy nuclear collisions

被引:287
作者
Krasnitz, A
Venugopalan, R
机构
[1] Univ Algarve, Unidad Ciencias Exactas & Humanas, P-8000 Faro, Portugal
[2] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
关键词
D O I
10.1103/PhysRevLett.84.4309
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In very-high-energy nuclear collisions, the initial energy of produced gluons per unit area per unit rapidity, (dE/L-2)/d eta, is equal to f(g(2) mu L)(g(2) mu)(3)/g(2), where mu(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) mu L) shows that it varies rapidly for small g(2) mu L. but varies only by similar to 25%, from 0.208 +/- 0.004 to 0.257 +/- 0.005, for a wide range 35.36-296.98 in g(2) mu 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/d eta for Au-Au collisions in the central region at RHIC and LHC.
引用
收藏
页码:4309 / 4312
页数:4
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