Forward particle production in proton-nucleus collisions at the LHC
Forward particle production in proton-nucleus collisions at the LHC
复制标题
大型强子对撞机质子-核碰撞中正向粒子的产生
DOI：
10.1088/1742-6596/422/1/012027
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
H. Fujii
中科院分区：
文献类型：
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作者：
佐古貴行;中村隆司;近藤洋介ほか;Shin-ichi Ohta;梶野文義;T.Hatsuda;梅原さおり;三原智;H. Fujii
本文介绍了在彩色玻璃凝聚框架下质子-核（p+ A）碰撞前区粒子产生的理论现状。用与未积分胶子分布有关的偶极振幅因子分解形式表示的截面。偶极振幅的能量依赖性由非线性x演化方程控制，并受到HERA e+ p散射数据的约束。靶的横向几何形状被建模为一个组件的核子分布与伍兹-撒克逊剖面。给出了在LHC能区p+ A反应中强子多重数的核修正因子的预测。
We present the current theory status on the particle production in the forward region in proton-nucleus (p+ A) collisions based on the Color Glass Condensate framework. The cross-section expressed in a factorized form with the dipole amplitude which is related to the unintegrated gluon distribution. Energy dependence of the dipole amplitude is controlled by the nonlinear x-evolution equation and constrained by e+ p scattering data at HERA. The transverse geometry of the target is modeled as an assembly of the nucleons distributed with the Woods-Saxon profile. We show our prediction for the nuclear modification factor of the hadron multiplicity in p+ A reactions at the LHC energy.