论文标题

重型夸克有效理论中的径向激发(n = 3)魅力介子

Radially excited (n=3)charm mesons in heavy quark effective theory

论文作者

Garg, Ritu, Kumar, Kundan, Upadhyay, Alka

论文摘要

通过探索重夸克有效理论(HQET),我们使用理论可用数据来分析n = 3个魅力介子的质量和衰减。从预测的质量中,我们从耦合方面研究了基态强衰减模式。将衰减与可用的总衰减宽度进行比较,我们在相关的耦合上提供上限。我们还为我们的预测数据(J,$ M^2 $)和($ n_r $,$ m^2 $)绘制了Regge轨迹,并通过固定Regge Slopes和截距来估计质量更高的质量(n = 4)。这些regge轨迹用于澄清$ d_2^*(3000)$ state的$ j^p $作为1f($ 2^+$)状态。提出的结果可能会通过即将到来的实验信息进一步获得确认。

By exploring heavy quark effective theory (HQET), we use theoretical available data for bottom mesons to analysis the masses and decays for n = 3 charm mesons. From the predicted masses, we studied ground state strong decay modes in terms of couplings. Comparing the decays with available total decay widths, we provide upper bounds on the associated couplings. We also plot Regge trajectories for our predicted data in planes (J, $M^2$ ) and ($n_r$, $M^2$ ) and estimated higher masses (n = 4) by fixing Regge slopes and intercepts. These Regge trajectories are used to clarify $D_2^*(3000)$ state's $J^P$ as 1F ($2^+$) state. The presented results may further get confirmation through upcoming experimental information.

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