电子-质子碰撞中的双强子关联现象

Dihadron Correlations in Electron-proton Collisions

通过分析不同色偶极模型得到的未积分胶子分布函数的适用性,选取了适用于碰撞能量较低的电子离子对撞机电子-质子深度非弹性散射实验的理论模型,并设计出一种能够解决当胶子动量分数较大时未积分胶子分布问题的数值方法。在此基础上,基于胶子饱和理论,在领头阶近似下研究了电子离子对撞机能量下电子-质子深度非弹性散射过程中的双强子关联现象。计算结果表明:理论值与在不考虑Sudakov效应下PYTHIA程序模拟出的实验结果基本一致。相关理论预言有待于电子离子对撞机实验验证。

By analyzing the applicability of the unintegrated gluon distribution functions obtained from different color dipole model,the model,which applies to the electron-proton deep inelastic scattering at electron ion collider with lower collision energy,is chosen. The method to solve the problem of the unintegrated gluon distribution at large gluon momentum fraction is designed. Then,in the gluon saturation formalism,the dihadron correlations in deep inelastic scattering from electron-proton collisions at electron ion collider energies are studied at leading order. It is shown that the theoretical results are in good agreement with the data from the PYTHIA simulations without Sudakov factor. The predictive results will be verified by the future electron ion collider experiments.