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arXiv 1801.09405hep-phhep-ex
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自洽手征夸克-孤子模型中单个重子的质量谱

Mass spectra of singly heavy baryons in a self-consistent chiral quark-soliton model

June-Young Kim, Hyun-Chul Kim, Ghil-Seok Yang

摘要:

本文基于自洽手征夸克孤子模型,研究了最低层单重子的质量谱。我们考虑了转动$1/N_c$和奇异流夸克质量($m_{\mathrm{s}}$)修正。将$m_{\mathrm{s}}$看作小微扰,将有效手征作用量展开到相对于$m_{s}$的二级.计算了重子的质量谱,并与实验数据进行了比较。将重子的经典质量拟合到每个表象的中心质量,我们确定了所有最低位的单个重子的质量。在考虑二阶$m_{\mathrm{s}}$修正的情况下,我们预言$Ω_b^*$重子的质量为6081.9 MeV.

英文摘要:

We investigate the mass spectra of the lowest-lying singly heavy baryons, based on the self-consistent chiral quark-soliton model. We take into account the rotational $1/N_c$ and strange current quark mass ($m_{\mathrm{s}}$) corrections. Regarding $m_{\mathrm{s}}$ as a small perturbation, we expand the effective chiral action to the second order with respect to $m_{s}$. The mass spectra of heavy baryons are computed and compared with the experimental data. Fitting the classical masses of the heavy baryon to the center mass of each representation, we determine the masses of all the lowest-lying singly heavy baryons. We predict the mass of the $Ω_b^*$ baryon to be 6081.9 MeV, when the second-order $m_{\mathrm{s}}$ corrections are included.

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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