Comprehending heavy charmonia and their decays by hadron loop effects
Comprehending heavy charmonia and their decays by hadron loop effects
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DOI：
10.1140/epja/i2014-14165-y
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发表时间：
2013-09
期刊：
影响因子：
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通讯作者：
Zhi-Yong Zhou;Zhiguang Xiao
中科院分区：
文献类型：
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作者：
Zhi-Yong Zhou;Zhiguang Xiao
我们提出，包括强子环效应可以帮助我们理解更重的粲类态的光谱和他们的强衰变的同时。通过将裸态耦合到开阈值上，对应于观测态的极点位置从势模型中预测的裸态转移到复能平面上。极质量通常从裸质量下拉，并且开粲衰减宽度与极位置的虚部有关。此外，我们还分析了真空中夸克对产生率在其测不准区域内变化时态的极轨线，表明谜态可以看作是与其他态一样通过与强子环耦合而产生的态。
We present that including the hadron loop effects could help us to understand the spectrum of the heavier charmonium-like states and their strong decays simultaneously. By coupling the bare states to the opened thresholds, the pole positions which correspond to the observed states are shifted from the bare states predicted in the potential model to the complex energy plane. The pole masses are generally pulled down from the bare masses and the open-charm decay widths are related to the imaginary parts of the pole positions. Moreover, we also analyze the pole trajectory ofstate while the quark pair production rate from the vacuum varies in its uncertainty region, which indicates that the enigmaticstate may be regarded as a state originating from thestate by coupling to hadron loops as the others.