论文标题
在重离子碰撞中，核gluon分布在颗粒产生中的作用
Role of nuclear gluon distribution on particle production in heavy ion collisions
论文作者
论文摘要
HADRON的横向动量光谱是根据$ k_t $ -Factorization框架中的$ x $ $ x $的$ k_t $ factorization框架内的未集成的Gluon分布（UGD）计算得出的。从$ pp $碰撞开始，由核培养基引起的修饰在高能中纳入了与核阴影现象有关的高能。此外，我们认为Minijet衰减中的粒子产生不足以解释由于艰难碰撞后发生的集体现象，$ aa $碰撞中的$ p_t $ spectra。为了评估平衡中粒子产生的分布，使用了Boltzmann-Gibbs爆炸波（BGBW）分布。分析了$ \ sqrt {s} = 2.76 $ tev的$ PBPB $ collisions的Alice Collaboration的数据，并计算了PION生产的核修饰因子。
The transverse momentum spectra of hadrons is calculated from the unintegrated gluon distribution (UGD) within the $k_T$-factorization framework at small $x$. Starting from $pp$ collisions, the modification caused by the nuclear medium is incorporated in the UGD at high energies, which is related to the nuclear shadowing phenomenon. Moreover, we consider that particle production from minijet decaying is not enough to explain the $p_T$ spectra in $AA$ collisions due to collective phenomena that take place after the hard collision. The Boltzmann-Gibbs Blast Wave (BGBW) distribution is utilized in order to evaluate the distribution of particle production in equilibrium. Data from ALICE collaboration for $PbPb$ collisions at $\sqrt{s}=2.76$ TeV are analyzed and the nuclear modification factor for pion production is computed.
