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

Analysis of strong decays of the charmed mesons D(2550), D(2600), D(2750) and D(2760)
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DOI:
10.1103/physrevd.83.014009
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发表时间:
2010-09
期刊:
影响因子:
5
通讯作者:
Zhi-Gang wang
Zhi-Gang wang
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhi-Gang wang

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本文用重夸克有效理论在首级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))是2S偶态(0{sup -},1 {sup -})和(D(2750),D(2760))分别作为一维双峰(2{sup -},3 {sup -})。D(2750)和D(2760)作为J{sup P}=3{sup -}的同一粒子的鉴定是不利的。
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{sup -},1{sup -}) and the (D(2750),D(2760)) as the 1D doublet (2{sup -},3{sup -}), respectively. The identification of the D(2750) and D(2760) as the same particle with J{sup P}=3{sup -} is disfavored.