Dynamical origin and the pole structure of X(3872).
Dynamical origin and the pole structure of X(3872).
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DOI：
10.1103/physrevlett.105.102002
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发表时间：
2010-06
影响因子：
8.6
通讯作者：
I. Danilkin;Y. Simonov
中科院分区：
文献类型：
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作者：
I. Danilkin;Y. Simonov
通道与衰变通道耦合的动力学机制应用于 JPC=1++ 的粲-DD* 态耦合情况。进行了极点分析，并计算出与实验定性一致的 DD* 生产截面。 D0D0* 阈值处的尖峰和平坦的背景显示是由于 Breit-Wigner 共振造成的，通过通道耦合从 23P1、QQ 态的 3954 MeV 的原始位置移动。对 n=2、3P2、1P1、3P0 进行类似的分析，使我们能够将第一个分析与观察到的 Z(3930) J=2 相关联，并解释 3P0 的命运。
The dynamical mechanism of channel coupling with the decay channels is applied to the case of coupled charmonium--DD* states with JPC=1++. A pole analysis is done and the DD* production cross section is calculated in qualitative agreement with experiment. The sharp peak at the D0D0* threshold and flat background are shown to be due to Breit-Wigner resonance, shifted by channel coupling from the original position of 3954 MeV for the 23P1, QQ state. A similar analysis, applied to the n=2, 3P2, 1P1, 3P0, allows us to associate the first one with the observed Z(3930) J=2 and explains the destiny of 3P0.