新疆大学物理科学与技术学院
纸质出版:2016
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[1]张旸,沙依甫加马力·达吾来提.对共振态核子衰变过程的计算[J].新疆大学学报(自然科学版),2016,33(02):182-185.
[1]张旸,沙依甫加马力·达吾来提.对共振态核子衰变过程的计算[J].新疆大学学报(自然科学版),2016,33(02):182-185. DOI: 10.13568/j.cnki.651094.2016.02.010.
DOI:10.13568/j.cnki.651094.2016.02.010.
对于核子共振态的衰变过程
本文利用处理强相互作用中低能量范围的重要方法之一有效拉氏量方法
在vector dominance model(VDM)中从核子共振态与光子的相互作用拉氏量出发导出了核子共振态与ω粒子的相互作用拉氏量
计算了自旋为3/2、宇称为负、质量为1 875MeV的核子共振态N*(1 875)和自旋为3/2、宇称为正、质量为1 900MeV的核子共振态N*(1 900)的ω衰变
并利用得到的衰变宽度与粒子数据库(PDG)对照
进而确定了相应的耦合常数.
In order to research the ω decay of nucleon resonance
we use the effective Lagrangian method for the intermediate and low energy region of strong interaction in the vector dominance model(VDM) to obtain the interaction Lagrangian between nucleon resonance and ω particle from the Lagrangian between nucleon resonance and photon.Furthermore we calculate the ω decay widths of two nucleon resonances:N+(1875)whose spin and parity is 3/2 and-l;and N+(1900) whose spin and parity is 3/2 and +1.After comparing the decay width with the Particle Data Group(PDG)
we determine the corresponding coupling constants.
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