$Z_b(10610)^\pm$ and $Z_b(10650)^\pm$ as the $B^*\bar{B}$ and $B^*\bar{B}^{*}$ molecular states
$Z_b(10610)^\pm$ and $Z_b(10650)^\pm$ as the $B^*\bar{B}$ and $B^*\bar{B}^{*}$ molecular states
复制标题
DOI：
10.1103/physrevd.84.054002
复制
发表时间：
2011-06
影响因子：
5
通讯作者：
Zhi-Feng Sun;Jun He;Xiang Liu;Z. Luo;Shi-Lin Zhu
中科院分区：
文献类型：
--
作者：
Zhi-Feng Sun;Jun He;Xiang Liu;Z. Luo;Shi-Lin Zhu
在单玻色子交换模型的框架下，我们研究了$B^*\bar{B}$和$B^*\bar{B}^{*}$系统的相互作用。在考虑s波和d波混合后，我们注意到$Z_b(10610)^\pm$和$Z_b(10650)^\pm$都可以很自然地解释为$B^*\bar{B}$和$B^*\bar{B}^{*}$分子态。在同一框架内，还存在X（3872）和其他几个分子底峰，它们是$Z_b(10610)$和$Z_b(10650)$的伙伴。仅远距离的单介子交换力就足以形成这些松散结合的分子状态，这保证了数值结果具有模型无关性和鲁棒性。
In the framework of the one-boson-exchange model, we have studied the interaction of the $B^*\bar{B}$ and $B^*\bar{B}^{*}$ system. After considering the S-wave and D-wave mixing, we notice that both $Z_b(10610)^\pm$ and $Z_b(10650)^\pm$ can be interpreted as the $B^*\bar{B}$ and $B^*\bar{B}^{*}$ molecular states quite naturally. Within the same framework, there also exist several molecular charmonia including X(3872) and several other molecular bottomonia, which are the partners of $Z_b(10610)$ and $Z_b(10650)$. The long-range one-pion-exchange force alone is strong enough to form these loosely bound molecular states, which ensures the numerical results quite model-independent and robust.