Possible molecular states in B(*)B(*) scatterings

Possible molecular states in B(*)B(*) scatterings
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DOI:
10.1103/physrevd.101.074027
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发表时间:
2019-12
期刊:
影响因子:
5
通讯作者:
Meng-Ting Yu;Zhi-Yong Zhou;D. Chen;Zhiguang Xiao
Meng-Ting Yu;Zhi-Yong Zhou;D. Chen;Zhiguang Xiao
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Meng-Ting Yu;Zhi-Yong Zhou;D. Chen;Zhiguang Xiao

文献摘要

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我们提出,如果将成分互换模型中的 $B^{(*)}B^{(*)}$ 散射振幅进行统一化,可以找到 $(I_{tot},S_{tot})=(0,1)$ $BB^*$ 和 $B^*B^*$ 系统的两个束缚态极点,这对应于两个 $I(J^P)=0(1^+)$ 双底分子态。此外,值得注意的是,$(1,0)$ $BB$、$(1,1)$ $BB^*$、$(1,0)$ $B^*B^*$ 和 $(1,2)$ $B^*B^*$ 系统中的虚拟状态可以产生刚好高于相关阈值的散射 $T$ 矩阵的模平方的增强,这可能对应于 $I(J^P)=1(0^+)$, $1(1^+)$ 和 $1(2^+)$ 分别为双底分子态。该计算可能有助于今后实验中寻找双底分子态。
We present that, if unitarizing the $B^{(*)}B^{(*)}$ scattering amplitudes in the constituent interchange model, one can find two bound state poles for $(I_{tot},S_{tot})=(0,1)$ $BB^*$ and $B^*B^*$ system, which corresponds to two $I(J^P)=0(1^+)$ doubly bottomed molecular states. Furthermore, it is noticed that the virtual states in $(1,0)$ $BB$, $(1,1)$ $BB^*$, $(1,0)$ $B^*B^*$, and $(1,2)$ $B^*B^*$ systems could produce enhancements of the module squares of the scattering $T$-matrix just above the related thresholds, which might correspond to $I(J^P)=1(0^+)$, $1(1^+)$, and $1(2^+)$ doubly bottomed molecular states, respectively. The calculation may be helpful for searching for the doubly bottomed molecular state in future experiments.