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arXiv 1803.03136hep-ph
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将新观察到的状态$B_{J}(5840)$与状态$B_{1}(5721)$、PDMATHAAC、PDMATHAAD、$B_{2s}^{*}(5840)$和$B_{J}(5970)$一起置于底部谱中

Placing the newly observed state $B_{J}(5840)$ in bottom spectra along with states $B_{1}(5721)$, $B_{2}^{*}(5747)$, $B_{s1}(5830)$, $B_{2s}^{*}(5840)$ and $B_{J}(5970)$

Pallavi Gupta, A. Upadhyay

备注：
10Pages, 1Figure, 6 Tables. arXiv admin note: substantial text overlap with arXiv:1801.00404
发表信息：
Phys. Rev. D 99, 094043 (2019)
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摘要：

本文在HQET框架下研究了高激发底态轻赝标介子$(π, η, K)$的两体强衰变。受LHCb合作组\cite{9}最近对底介子$B_{J}(5840)$观测的启发，我们根据理论上可获得的质量对底介子$B_{J}(5840)$的六种可能性进行了分类。通过对这六种情况下$B_{J}(5840)$的强衰变宽度和分支比的分析，我们证明了其中一种是最有利的分配，我们还考察了最近观察到的底态$B_{J}(5970)$为2S $1^{-}$，以及态$B_{J}(5721)$和$B_{2}^{*}(5747)$与它们的奇怪伙伴$B_{s1}(5830)$和$B_{2s}^{*}(5840)$分别为$1P_{3/2}1^{+}$和$1P_{3/2}2^{+}$的$J^{P}$。预测的耦合常数$g_{XH}$、$\widetilde{g}_{HH}$和$g_{TH}$有助于弥补实验上缺失的底态$B(2 ^{1}S_{0})$、$B_{s}(2 ^{3}S_{1})$、$B_{s}(2 ^{1}S_{0})$、$B(1 ^{1}D_{2})$、$B_{s}(1 ^{3}D_{1})$和$B_{s}(1 ^{1}D_{2})$的强衰变宽度。这些预测为即将进行的实验研究提供了重要信息。

英文摘要：

In this article, we study the two body strong decays with the emission of light pseudo-scalar mesons $(π, η, K)$ for higher excited bottom states with in the framework of HQET. Inspired from the recent observation of bottom meson $B_{J}(5840)$ by LHCb collaboration \cite{9}, we classify the six possible $J^{P}$'s for this state on the basis of the theoretically available masses. By analyzing the strong decay widths and the branching ratios for all these six cases of $B_{J}(5840)$, we justify one of them to be the most favorable assignment for it. We also examined the recently observed bottom state $B_{J}(5970)$ as 2S$1^{-}$ and states $B_{J}(5721)$ and $B_{2}^{*}(5747)$ with their strange partners $B_{s1}(5830)$ and $B_{2s}^{*}(5840)$ for their $J^{P}$'s as $1P_{3/2}1^{+}$ and $1P_{3/2}2^{+}$ respectively. The predicted coupling constants $g_{XH}$, $\widetilde{g}_{HH}$ and $g_{TH}$ helps in redeeming the strong decay width of experimentally missing bottom states $B(2 ^{1}S_{0})$, $B_{s}(2 ^{3}S_{1})$, $B_{s}(2 ^{1}S_{0})$, $B(1 ^{1}D_{2})$, $B_{s}(1 ^{3}D_{1})$ and $B_{s}(1 ^{1}D_{2})$. These predictions provide a crucial information for upcoming experimental studies.

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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