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arXiv 1611.04085hep-lathep-exhep-ph
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格点量子色动力学中的粲底介子

Charmed-Bottom Mesons from Lattice QCD

Nilmani Mathur, M. Padmanath, Randy Lewis

摘要:

我们给出了含有粲和底夸克的介子的基态谱。对于粲夸克,我们使用重叠价夸克,而一个非相对论性的制定是利用底夸克的2+1+1口味的HISQ规范配置的MILC合作产生的背景下。发现$B_c$介子的$1S$态之间的超精细分裂为$56^{+4}_{-3}$ MeV。我们还研究了只含粲夸克和底夸克的重子,并预言了它们的基态质量。结果得到在三个晶格间距。

英文摘要:

We present ground state spectra of mesons containing a charm and a bottom quark. For the charm quark we use overlap valence quarks while a non-relativistic formulation is utilized for the bottom quark on a background of 2+1+1 flavors HISQ gauge configurations generated by the MILC collaboration. The hyperfine splitting between $1S$ states of $B_c$ mesons is found to be $56^{+4}_{-3}$ MeV. We also study the baryons containing only charm and bottom quarks and predict their ground state masses. Results are obtained at three lattice spacings.

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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