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arXiv 2103.04453hep-ex
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在LHCb实验中美丽的光谱衰变

Spectroscopy in beauty decays at the LHCb experiment

Tatiana Ovsiannikova

摘要:

美强子衰变是研究粲偶素和类粲偶素态,如$χ_{c1}(3872)$介子等奇异态和张量D波($ψ_2(3823$)态的独特实验室。然而,许多外来的类似粲的候选者的性质仍然未知。最新的LHCb结果有关的b-强子衰变到粲偶素状态,并获得使用大数据样本收集在运行1和运行2期间。这包括使用$B^{+} \to J/ψπ^{+}π^{-}K^{+}$衰变对$χ_{c1}(3872)$态的质量和宽度进行最精确的测定,在来自$B^{0}_{s} \to J/ψπ^{+}π^{-}K^{+}K^{-}$衰变的$J/ψϕ$质谱中观察到以X(4740)表示的共振结构,以及对$B^{0}_{s}$介子质量的精确测量。

英文摘要:

The beauty hadron decays is unique laboratory to study charmonium and charmonium-like states, such as the $χ_{c1}(3872)$ meson, other exotic states and the tensor D-wave $ψ_2(3823$) states. However the nature of many exotic charmonium-like candidates are still unknown. The most recent LHCb results related to b-hadron decays to charmonium states and obtained using large data samples collected during the Run 1 and Run 2 periods are presented. This includes the most precise determination of the mass and width of the $χ_{c1}(3872)$ state using the $B^{+} \to J/ψπ^{+}π^{-}K^{+}$ decays, observation of a resonant structure denoted as X(4740) in the $J/ψϕ$ mass spectrum from $B^{0}_{s} \to J/ψπ^{+}π^{-}K^{+}K^{-}$ decays and the precise measurement of the $B^{0}_{s}$ meson mass.

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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