With calculating one can observe the n * ( 1440 ) resonance peak obviously in the invariant mass spectrum of n system , and in daliz plots the event number distribution is density , there are no such phenomenons in other composed systems . all of these things we have got will be helpful to the imminent experimental detection 通过计算我们可以得到末态各个粒子各种可能的信息，在n的不变质量谱上有明显的共振峰出现，在达里兹图的相应位置处事件分布密集，而在其它组态中却没有这种现象，这都说明了n ~ * ( 1440 )的产生。
It takes advantages of modern computer to fit all the experimental information , hence a very powerful pwa method . in this thesis , we use this method to analysis hadrons japdecay model jap - > ( ptt - tr + and j p radioactive decay model based on the pwa amplitude , we received mass distribution of two outgoing pious and angle distribution of the outgoing particles using the cern program . finally we compared tow different form factors ( barrier factors and gauss factor ) wh ich were always used the calculating of pwa amplitude 本文采用这种分析方法给出的j强衰变j ~ - ~ +和j粒子辐射衰变j ~ - ~ +分波振幅公式，利用cern的蒙特卡罗模拟程序绘出了末态粒子的角分布和不变质量分布，对分波分析中常用的两种动力学形状因子(中心位垒因子和高斯压低因子)进行了研究比较。
The fourth chapter lists out partial amplitude of using the pwa method described in chapter four , then we use cern programs to calculate out and plot angular distributions and mass distribution , finally we compare the influence of different form factors . the fifth chapter adopts the same process of the third chapter to analysis the decay the last chapter summaries our work and prospects further studying fields based on this thesis 第四章利用第三章描述的方法对j ~ - ~ +衰变进行了分波分析，然后用cern程序库中的蒙特卡罗模拟程序和paw软件对各个分波振幅进行了数值计算和绘图，在给出各种分波成分末态粒子不变质量分布和角分布的基础上，分析了两种形状因子对不变质量分布的影响。
