论文标题
美元
$QQqq\bar q$ Quark System, Compact Pentaquark, and Gauge/String Duality
论文作者
论文摘要
对于两种光口味的情况，我们提出了由两个重量和三个轻夸克组成的系统的具章描述，目的是探索系统内部的夸克组织及其低洼的Born-oppenheimer电位，作为重型夸克分离的功能。我们的分析揭示了与字符串重新连接，断裂和灭绝的几个关键分离。我们发现，紧凑的Pentaquark配置使第一个激发态在小分离处的电势具有主要贡献，并且对于大于$ 0.1 \，\ text {fm} $的分离，Antiquark-Diquark-Diquark-Diquark-Diquark-Diquark-Diquark-Diquark-Diquark-Diquark-Diquark结构出现了。此外，事实证明，字符串连接的长度比例与$ qq \ bar q \ bar q $系统的长度相同。我们还讨论了$ QQQ $系统的潜力以及在夸克限制中的群众群众之间的某些关系的关系。
For the case of two light flavors we propose the stringy description of the system consisting of two heavy and three light quarks, with the aim of exploring the quark organization inside the system and its low-lying Born-Oppenheimer potentials as a function of the heavy quark separation. Our analysis reveals several critical separations related to the processes of string reconnection, breaking and junction annihilation. We find that a compact pentaquark configuration makes the dominant contribution to the potential of the first excited state at small separations, and for separations larger than $0.1\,\text{fm}$, the antiquark-diquark-diquark structure emerges. Moreover, it turns out that the length scale of string junction annihilation is the same as that for the $QQ\bar q\bar q$ system. We also discuss the relation to the potential of the $QQq$ system and some relations among the masses of hadrons in the heavy quark limit.
