相对论条件下的三体衰变能量分布  

Energy distribution of three-body decay in relative theory conditions

作　　者：王琢[1] 

机构地区：[1]清华大学理学院,北京100084

出　　处：《大学物理》2008年第5期49-51,63,共4页College Physics

摘　　要：分析了在初动量为零时的等质量三体衰变问题.借助Dalitz图,研究衰变后能量在3个碎片中的分配关系,以及在Dalitz图中的形状.分析了在Newton经典力学、极端相对论和非极端相对论情形下的Dalitz图.在数学上分析图像差异,讨论其根源,并介绍其应用.The problem of 3-body decaying with equal mass under the condition of no initial momentum is analyzed. With the Dalitz diagram, we pressent s the energy distribution of three body and its shape in the Dalitz diagram based on the Newton＇s dynamics, extreme and non-extreme relativity theory. The shape differences and its reasons using math language and introduces its preliminary applications is also discussed

关 键 词：Dalitz图 能量分布 极端相对论 π^0介子 

分 类 号：O571.3[理学—粒子物理与原子核物理]