Theoretical Study of the Open-Flavored Tetraquark T_cs̅(2900) in the Process B̅_s^0 → K^0 D^0 Π ^0

Wen-Tao Lyu,Man-Yu Duan,Xiaoyu Wang,Dian-Yong Chen,En Wang

The European Physical Journal C（2025）

Zhengzhou University | Southeast University

Cited 0|Views4

Abstract

Recently, the LHCb Collaboration has measured two decay processes B^0→D̅^0D_s^+π ^- and B^+→ D^-D_s^+π ^+ related to isospin symmetry, where two new open-flavored tetraquark states T_cs̅(2900)^0 and T_cs̅(2900)^++ that belong to an isospin triplet were observed in the D_s^+π ^- and D_s^+π ^+ invariant mass distributions. In this work, we have investigated the validity of the process B̅_s^0→ K^0D^0π ^0 as the promising process to confirm the existence of T_cs̅(2900)^0 resonance. Taking into account the tetraquark state T_cs̅(2900) , as well as intermediate resonances K^*(892) , K_0^*(1430) , and K_2^*(1430) , it has been shown that a clear peak of the open-flavored tetraquark T_cs̅(2900) appears in the K^0D^0 invariant mass distribution of the process B̅_s^0→ K^0D^0π ^0 , which could be tested by future experiments.

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【要点】：本研究通过理论计算探讨了在B̅_s^0 → K^0 D^0 Π^0过程中寻找开放味四夸克态T_cs̅(2900)的有效性，并提出了一种新的验证该共振态存在的方法。
【方法】：研究考虑了四夸克态T_cs̅(2900)以及中间态共振K^*(892)、K_0^*(1430)和K_2^*(1430)，通过分析B̅_s^0 → K^0 D^0 Π^0过程中K^0 D^0不变质量分布来寻找T_cs̅(2900)的清晰峰值。
【实验】：本文未涉及具体实验操作，但指出未来的实验可以通过分析B̅_s^0 → K^0 D^0 Π^0过程来测试T_cs̅(2900)的存在，文中未提及使用的数据集名称。

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