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arXiv · 2306.06976

Doubly-heavy tetraquark at finite temperature in a holographic model

Xi Guo·Jia-Jie Jiang·Xuan Liu·Dong Xiang·Xun Chen
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Abstract

In this paper, we employ gauge/gravity duality to investigate the string breaking and melting of doubly-heavy tetraquark that includes two heavy quarks and two light antiquarks in a holographic model at finite temperature. Firstly, we investigate four configurations of $\rm{QQ\bar{q}\bar{q}}$ in the confined phase and consider different separation distances of the heavy quarks at varying temperatures. At high temperature, $\rm{QQ\bar{q}\bar{q}}$ melts at certain distances and the confined quarks are released. As the temperature continues to increase, some configurations of doubly-heavy tetraquark can not exist. Furthermore, we investigate three decay modes of $\rm{QQ\bar{q}\bar{q}}$ and compare the potential energy of $\rm{QQ\bar{q}\bar{q}}$ with that of $\rm{QQq}$ at finite temperature .

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Xi Guo, Jia-Jie Jiang, Xuan Liu, Dong Xiang, Xun Chen. 2023-06-12. Doubly-heavy tetraquark at finite temperature in a holographic model. https://arxiv.org/abs/2306.06976

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