论文标题
使用发达的伯特盐理论计算不稳定分子状态的质量和宽度
Calculation of mass and width of unstable molecular state using the developed Bethe-Salpeter theory
论文作者
论文摘要
应用开发的伯特盐理论来处理共振，我们研究了由总哈密顿量确定的两个媒介膜组成的分子状态的时间演变。那么异国情调的介子共振$χ_{C0}（3915）$被认为是两个不稳定的分子状态的混合状态$ d^{*0} \ bar {d}^{*0} $ and $ d^{*+}+}+} d^{*+} d^{*{相对论量子场理论的框架。在此实际计算中，我们详细介绍了如何获得共振能量水平的校正，并在扩展的Feynman图中表现出分散关系的关键特征。数值结果与实验值一致。
Applying the developed Bethe-Salpeter theory for dealing with resonance, we investigate the time evolution of molecular state composed of two vector mesons as determined by the total Hamiltonian. Then exotic meson resonance $χ_{c0}(3915)$ is considered as a mixed state of two unstable molecular states $D^{*0}\bar{D}^{*0}$ and $D^{*+}D^{*-}$, and the mass and width for physical resonance $χ_{c0}(3915)$ are calculated in the framework of relativistic quantum field theory. In this actual calculation, we minutely show how to obtain the correction for energy level of resonance and to exhibit the key features of dispersion relation in an extended Feynman diagram. The numerical results are consistent with the experimental values.
