论文标题
带有$ qqs \ bar {q} q $配置的pentaquarks在手性夸克模型中
Pentaquarks with the $qqs\bar{Q}Q$ configuration in the Chiral Quark Model
论文作者
论文摘要
我们研究了五夸克系统，该系统由$ qqs \ bar {q} q $配置（$ q = u $或$ d $，$ q = b $或$ c $），在手性夸克型号的框架中。因此，通过精确的五体动力学计算预测了一系列具有重型口味的结合状态。我们发现，考虑到颜色octet结构始终提供的能量比颜色简单的结构更具边界能量，而更重的夸克防止，更容易形成结合状态。我们建议$ qqs \ bar {b} b $配置是一种紧凑的$ \ bar {b} b $ - pair，周围有其他三个夸克，而$ qqs \ bar {b} c $，$ qqs \ bar {c} c} c} b $ and $ qqs \ bar \ bar \ bar {c} c} c $ cop {c} c $ copporiatiation。
We study the five-quark system composed of $qqs\bar{Q}Q$ configuration ($q = u$ or $d$, $Q=b$ or $c$), in the framework of the chiral quark model. In consequence, a series of bound states with heavy flavors are predicted by precise five-body dynamical calculations. We found that taking color-octet structure into consideration always provides more bounding energy than color-singlet structure, and the more heavier quark prevents, the easier to form the bound states. We suggest $qqs\bar{b}b$ configuration is a compact $\bar{b}b$-pair surrounded by three other quarks, while $qqs\bar{b}c$, $qqs\bar{c}b$ and $qqs\bar{c}c$ configurations are molecular states.
