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arXiv 1009.3605hep-ph
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粲介子D(2550),D(2600),D(2750)和D(2760)强衰变的分析

Analysis of strong decays of the charmed mesons D(2550), D(2600), D(2750) and D(2760)

Zhi-Gang Wang

摘要:

本文采用重夸克有效理论在首阶近似下研究了新观测到的粲介子$D(2550)$、$D(2600)$、$D(2750)$和$D(2760)$的强衰变,并初步确定$(D(2550),D(2600))$为$2S$双峰$(0^-,1^-)$,$(D(2750),D(2760))$为$1D$双峰$(2^-,3^-)$.将$D(2750)$和$D(2760)$与$J^P=3^-$鉴别为相同颗粒是不利的。

英文摘要:

In this article, we study the strong decays of the newly observed charmed mesons $D(2550)$, $D(2600)$, $D(2750)$ and $D(2760)$ with the heavy quark effective theory in the leading order approximation, and tentatively identify the $(D(2550),D(2600))$ as the $2S$ doublet $(0^-,1^-)$ and the $(D(2750),D(2760))$ as the $1D$ doublet $(2^-,3^-)$, respectively. The identification of the $D(2750)$ and $D(2760)$ as the same particle with $J^P=3^-$ is disfavored.

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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