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arXiv 2506.08069hep-ph
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重夸克有效理论中的径向激发底介子

Radially Excited Bottom Mesons in Heavy Quark Effective Theory

Ritu Garg, Preeti Bhall, K. K Vishwakarma

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AI总结：

本文扩展先前粲介子的HQET研究，计算径向激发底介子及其奇异伙伴的质量、强子耦合与衰变宽度上限，并构造Regge轨迹预测n=4态。

摘要：

本文采用重夸克有效理论（HQET）研究实验上尚未发现的径向激发底介子态。这是我们先前工作的扩展，在该工作中我们曾应用HQET计算粲介子。通过将理论见解与含味对称参数的粲介子可用实验数据相结合，我们计算了径向激发底介子态及其奇异伙伴的质量。此外，我们以强子耦合常数$\ ilde{\ ilde{g}}_{HH}$、$\ ilde{\ ilde{g}}_{SH}$、$\ ilde{\ ilde{g}}_{TH}$的形式计算了衰变宽度。通过将我们的衰变宽度预测与可用的总衰变宽度进行比较，我们计算了相应耦合的上限。我们还在（$J$，$M^2$）和（$n_r$，$M^2$）平面中为预测数据构造了Regge轨迹，并通过固定Regge斜率和截距估计了更高质量（$n=4$）。未来的实验结果可以验证本文所得结果。

英文摘要：

In this paper, Heavy Quark Effective Theory (HQET) is employed to investigate experimentally missing radially excited bottom-meson states. It is an extension of our previous work, in which we had applied HQET for the calculation of charm mesons. By incorporating both theoretical insights and available experimental data on charmed mesons with flavor-symmetry parameters, we computed masses of radially excited bottom-meson states with their strange partners. In addition, decay widths are calculated in the form of hadronic coupling constants $\tilde{\tilde{g}}_{HH}$, $\tilde{\tilde{g}}_{SH}$, $\tilde{\tilde{g}}_{TH}$. By comparing our decay width predictions with available total decay widths, we calculated upper bounds on the corresponding couplings. Regge trajectories are also constructed for our predicted data in planes ($J$, $M^2$ ) and ($n_r$, $M^2$ ), and estimate higher masses ($n = 4$) by fixing Regge slopes and intercepts. Future experimental findings can validate the results obtained in this work.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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