论文标题
在阈值附近的BFKL的运动学约束上
On the kinematic constraint in BFKL near threshold region
论文作者
论文摘要
我们引入了一个改良的Balitskii-Fadin-Kuraev-lipatov（BFKL）方程，并具有源自外部运动学约束的快速否决。尽管这是一种正式的子领先功率贡献，但这种运动学效应变得非常重要，尤其是在阈值区域，那里没有足够的相位空间无法完全开发出小的$ x $进化。我们还研究了在PP和EA碰撞中前颗粒产生过程中运动学约束BFKL方程的现象学后果。结果表明，在阈值区域中，较大的横向动量下的颗粒屈服被显着抑制。
We introduce a modified Balitskii-Fadin-Kuraev-Lipatov (BFKL) equation with the rapidity veto that originates from external kinematic constraint. Though it is a formally sub-leading power contribution, such kinematic effect becomes very important especially in the threshold region, where there is no sufficient phase space for the small $x$ evolution to be fully developed. We also investigate the phenomenological consequences of the kinematic constraint BFKL equation in the forward particle production processes in pp and eA collisions. It is shown that particle yield at large transverse momentum is significantly suppressed in the threshold region.
