摘要
在扭曲波冲量近似的框架下,本文讨论A(π^+,η)B电荷交换反应下的η粒子产生。具体计算π能量为600—700MeV能区的^(13)C(π^+,η)^(1■)N反应。分别用Eikonal近似方法和严格的分波法处理扭曲波。计算表明,在所讨论的能区中,Eikona1近似是一个好近似。同时,还讨论了束缚态行为的重要性。由于这个反应动量传递大,因此要求具有准确的核外束缚态波函数。
In the framework of the distorted wave impulse-approximation, this paper discusses η production from charge exchange reaction of type A(π^+,η)B. Calculations are presented for the reaction ^(13)C(π, η) ^(13)N~* at pion energies 600-700 MeV. Distorted waves are calculated using the Eikonal approximation and exact partial wave calculations respectively.It is shown that the Eikonal approximation is a good approximation for the energy region considered. The importance of the behaviour of the bound slate wave function is discussed. The authors find that the use of exact bound state wave functions is essential for the calculation of cross sections at large momentum transfers.
出处
《北方工业大学学报》
1987年第1期22-32,共11页
Journal of North China University of Technology
