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arXiv 0906.5593hep-phnucl-exnucl-th
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核未积分胶子分布的一个简单模型

A simple model for the nuclear unintegrated gluon distribution

M. A. Betemps, M. V. T. Machado

摘要:

稠密核胶子密度的非线性演化方程的解被认为是对撞机能量下pA和AA碰撞的相关机制之一。在这里,我们研究了一个简单的参数化的未积分胶子分布使用的知识的Balitsky-Kovchegov方程的渐近解,描述高能QCD饱和效应的存在下。得到了小x下核阴影的满意描述,使我们能够理解数据所示的定性行为。

英文摘要:

The solution of non-linear evolution equations for dense nuclear gluon density has been suggested as one of the relevant mechanisms of pA and AA collisions at collider energies. Here we study a simple parameterization for the unintegrated gluon distribution using the knowledge of asymptotic solutions of the Balitsky-Kovchegov equation, describing high-energy QCD in the presence of saturation effects. A satisfactory description of nuclear shadowing at small-x is obtained and it allows us to understand the qualitative behavior shown by data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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