论文标题
识别$λ_b（6146）^0 $和$λ_b（6152）^0 $ as $ d $ - 波底底重男
Identifying the $Λ_b(6146)^0$ and $Λ_b(6152)^0$ as $D$-wave bottom baryons
论文作者
论文摘要
我们研究$λ_b（6146）^0 $和$λ_b（6152）^0 $最近由LHCB使用QCD总规则的方法在重夸克有效理论的框架内使用QCD总规则。我们的结果表明，它们可以分别解释为$ j^p = 3/2^+$和$ 5/2^+$的$ d $ - 波底重bary子，这两者都包含两个$λ$ -Mode激发。我们还调查了包含$ρ$ mode激发的其他可能作业。我们将其陌生伙伴的质量预测为$ m_ {ξ_b（3/2^+）} = 6.26^{+0.11} _ { - 0.14} $ gev和$ m_ {ξ_b（5/2^+）= 6.26^= 6.26^{+0.11} {+0.11} _ {+0.11} _ { - 0.14} $ gev $ gev $ gev $ gev $ g。 4.5^{+1.9} _ { - 1.5} $ MEV，并建议在将来的LHCB和CMS实验中搜索它们。
We study the $Λ_b(6146)^0$ and $Λ_b(6152)^0$ recently observed by LHCb using the method of QCD sum rules within the framework of heavy quark effective theory. Our results suggest that they can be interpreted as $D$-wave bottom baryons of $J^P = 3/2^+$ and $5/2^+$ respectively, both of which contain two $λ$-mode excitations. We also investigate other possible assignments containing $ρ$-mode excitations. We predict masses of their strangeness partners to be $m_{Ξ_b(3/2^+)} = 6.26^{+0.11}_{-0.14}$ GeV and $m_{Ξ_b(5/2^+)} = 6.26^{+0.11}_{-0.14}$ GeV with the mass splitting $ΔM = 4.5^{+1.9}_{-1.5}$ MeV, and propose to search for them in future LHCb and CMS experiments.
