There are charge distribution of the nucleons a which is not a point, thus, in our invariant amplitude the form factor of nucleons a will come spontaneously, the cross section will be much imfluenced by the form factor 由于在反應(yīng)中原子核a為有大小電荷分布的粒子而不是點(diǎn)粒子,從而在計(jì)算不變振幅過(guò)程中會(huì)出現(xiàn)形狀因子,這會(huì)對(duì)所計(jì)算的散射截面有很大的影響。
The first two chapter is about some basic acknowledgement of particle physic pertinent to our studying and summaries the researching state of jap decay in finding glueball, hybrids, multiple-quake state and the pwa method . the third chapter goes into particulars of how to use feyman rules to write out invariant amplitudes 第一章和第二章分別簡(jiǎn)略介紹與粒子物理和j粒子物理相關(guān)基礎(chǔ)知識(shí),并敘述了粒子物理利用j豐富的衰變道尋找膠球、混雜態(tài)和多夸克態(tài)的研究狀況。