Radiative energy loss of high-energy quarks in finite-size nuclear matter and quark-gluon plasma
Radiative energy loss of high-energy quarks in finite-size nuclear matter and quark-gluon plasma
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DOI：
10.1134/1.567389
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发表时间：
1997-04
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影响因子：
--
通讯作者：
B. Zakharov
中科院分区：
文献类型：
--
作者：
B. Zakharov
研究了有限尺寸QCD介质中高能夸克的感生胶子辐射。对于介质内产生的足够能量的夸克，我们发现辐射能量损失ΔEq ‡ L2，其中L是夸克在介质中移动的距离。它对初始夸克能量有弱的依赖性。随着夸克能量的降低，L2依赖性变为L1依赖性。对冷核物质和热夸克胶子等离子体进行了数值计算。对于夸克入射到核上，我们预测ΔEq = 0.1Eq（L/10 fm）β，β接近于1。
The induced gluon radiation of a high-energy quark in a finite-size QCD medium is studied. For a sufficiently energetic quark produced inside a medium we find the radiative energy loss ΔEq∝L2, whereLis the distance traveled by quark in the medium. It has a weak dependence on the initial quark energyEq. TheL2dependence turns toL1as the quark energy decreases. Numerical calculations are performed for a cold nuclear matter and a hot quark-gluon plasma. For a quark incident on a nucleus we predict ΔEq≈0.1Eq(L/10fm)β, withβclose to unity.