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arXiv 1202.4167hep-phnucl-th
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通量管模型中的X(1835)、X(2120)和X(2370)

X(1835), X(2120) and X(2370) in a flux tube model

Chengrong Deng, Jialun Ping, Youchang Yang, Fan Wang

摘要:

在六体禁闭势的流管模型中,用高斯展开方法系统地研究了非奇异重子谱。所有的模型参数都由重子性质决定,因此重子计算是无参数的。我们发现,北京谱仪合作在$J/ψ$辐射衰变中观察到的X(1835)和X(2370)可以分别描述为量子数为$I^GJ^{PC}=0^+0^{-+}$的$N_8\bar{N}_8$和$Δ_8\barΔ_8$束缚态,这些束缚态应该是类似于哑铃的三维构型的色限共振,但X(2120)不能被我们的模型所容纳。

英文摘要:

Nonstrange baryonium spectrum is systematically studied by using the Gaussian expansion method in a flux tube model with the six-body confinement potential. All the model parameters are fixed by baryon properties, so the baryonium calculation is parameter-free. We find that X(1835) and X(2370), which are observed in the radiative decay of $J/ψ$ by BES collaboration, can be described as $N_8\bar{N}_8$ and $Δ_8\barΔ_8$ bound states with quantum numbers $I^GJ^{PC}=0^+0^{-+}$, respectively, such bound states should be color confinement resonances with three-dimensional configurations similar to dumbbell, however, X(2120) can not be accommodated in our model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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