The properties of pentaquarks containing a heavy anti-quark and strangequarks are studied in the bound state picture. In the flavor SU(3) limit, thereare many pentaquark states with the same binding energy. When the SU(3)symmetry breaking effects are included, however, three states becomeparticularly stable due to a ``Gell-Mann--Okubo mechanism''. They are the $\barQsuud$ and $\bar Qsudd$ states discussed by Lipkin, and a a previouslyunstudied $\bar Qssud$ state. These states will have $J^P={1\over2}^+$ andtheir masses are estimated. These states, if exist, may be seen in experimentsin the near future.
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机译：在结合态图中研究了含有重反夸克和奇夸克的五夸克的性质。在风味SU（3）的限制下，存在许多具有相同结合能的五夸克态。但是，当包含SU（3）对称断裂效应时，由于``Gell-Mann-Okubo机制''，三种状态变得特别稳定。这是Lipkin讨论的$ \ barQsuud $和$ \ bar Qsudd $状态，以及以前未研究过的$ \ bar Qssud $状态。这些状态将具有$ J ^ P = {1 \ over2} ^ + $，并对其质量进行估算。这些状态（如果存在）可能会在不久的将来在实验中看到。
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