高能pp碰撞喷注的判定及其性质的研究

Identification and properties of the jets in high energy pp collisions

用CERN-Sp(?)S对撞机产生5000 000个高能p(?)碰撞事件并用喷注的圆锥判定法判定事件中的喷注.并且对不同喷注数的百分比、累积变量、喷注内部粒子数相对于坐标Y,Pt,(?)的区间分布以及一维二阶阶乘矩的饱和现象等性质进行了研究.最后用三维自仿射分析得到了三维二阶阶乘矩的反常标度性.

First, 5 millions p(?) collision events are produced at CERN-Sp(?)S collider and the jets in events arc identified by the'Cone algorithm'. Then,the properties of the jets,such as the percentags of different jet numbers, cumulant variables, the distributions of particle numbers according to the regions of y,Pt,(?) and the saturated curves of 1-dimensional second-order factorial moments, etc, are studied. Finally, the anomalous scaling property of 3-dimensional second-order factorial moments is obtained from self-affine analysis.