CAJ | 학술논문

最近提出W+W-强子衰变过程中的负关联效应可能是色重组的信号.采用随机级联α模型研究这一效应.在模型中假设色重组导致W+W-衰变形成的两个末态系统之间的粒子发生交换.根据这一物理图象可以再现Pythia事件产生器所得到的负关联.
최근제출W+W-강자쇠변과정중적부관련효응가능시색중조적신호.채용수궤급련α모형연구저일효응.재모형중가설색중조도치W+W-쇠변형성적량개말태계통지간적입자발생교환.근거저일물리도상가이재현Pythia사건산생기소득도적부관련.
The negative correlation in W+ W- hadronic decay,which has recently been proposed as a possible signal for the colour reconnection in these processes,is studied in some detail by using the random cascading α-model.The effect of colour reconnection is modeled by the particle exchange between two final state systems forming from two W's .The negative correlation given by Pythia event generator is recovered in this way,providing a physical picture for this effect.