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arXiv 2010.10697hep-ph
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P波$Ω_{b}$状态:质量和极留数

P-wave $Ω_{b}$ states: masses and pole residues

Yong-Jiang Xu, Yong-Lu Liu, Ming-Qiu Huang

摘要:

本文考虑用带有导数的内插电流表示的所有P波$Ω_{b}$态,并用QCD求和规则的方法计算相应的质量和极点留数。由于我们的计算中存在很大的不确定性,而LHCb合作组观测到的$Ω_{b}$激发态的质量相差很小,因此有必要研究由本工作中研究的内插电流所代表的P波$Ω_{b}$态的其他性质,以便更好地理解LHCb合作组观测到的四个$Ω_{b}$激发态。

英文摘要:

In this paper, we consider all P-wave $Ω_{b}$ states represented by interpolating currents with a derivative and calculate the corresponding masses and pole residues with the method of QCD sum rule. Due to the large uncertainties in our calculation compared with the small difference in the masses of the excited $Ω_{b}$ states observed by the LHCb collaboration, it is necessary to study other properties of the P-wave $Ω_{b}$ states represented by the interpolating currents investigated in the present work in order to have a better understanding about the four excited $Ω_{b}$ states observed by the LHCb collaboration.

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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