对共振态核子衰变过程的计算Calculation of Decay of Nucleon Resonance
张旸;沙依甫加马力·达吾来提;
摘要(Abstract):
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*(1 875)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.
关键词(KeyWords): 有效拉式量方法;共振态核子;衰变宽度;耦合常数
基金项目(Foundation): 国家自然科学基金(11165014)
作者(Authors): 张旸;沙依甫加马力·达吾来提;
DOI: 10.13568/j.cnki.651094.2016.02.010
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