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arXiv 1708.02460hep-phhep-ex
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$Λ_c(2286)$的非轻子两体弱衰变

Non-leptonic two-body weak decays of $Λ_c(2286)$

C. Q. Geng, Y. K. Hsiao, Yu-Heng Lin, Liang-Liang Liu

备注：
12 pages, 1 figure, revised version accepted by PLB
发表信息：
Phys. Lett. B 776 (2017) 265-269
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摘要：

研究了以${\bf B}_n$（$M$）为重子（介子）态的$Λ_c^+(2286)\to {\bf B}_n M$的非轻子两体弱衰变.基于$SU(3)$味对称性，我们可以更高精度地描述BESIII合作组重新检验的大部分数据。然而，我们对${\cal B}(Λ_c^+ \to pπ^0)=(5.6\pm 1.5)\times 10^{-4}$的研究结果大于目前$3\times10^{-4}$的实验极限（90% C. L.）的BESIII。此外，我们发现${\cal B}(Λ_c^+ \to Σ^+ K^0)=(8.0\pm 1.6)\times 10^{-4}$，${\cal B}(Λ_c^+ \to Σ^+ η^\prime)=(1.0^{+1.6}_{-0.8})\times 10^{-2}$，和${\cal B}(Λ_c^+ \to p η^\prime)=(12.2^{+14.3}_{-\,\,\,8.7})\times 10^{-4}$，这是可访问的BESIII实验。

英文摘要：

We study the non-leptonic two-body weak decays of $Λ_c^+(2286)\to {\bf B}_n M$ with ${\bf B}_n$ ($M$) representing as the baryon (meson) states. Based on the $SU(3)$ flavor symmetry, we can describe most of the data reexamined by the BESIII Collaboration with higher precisions. However, our result of ${\cal B}(Λ_c^+ \to pπ^0)=(5.6\pm 1.5)\times 10^{-4}$ is larger than the current experimental limit of $3\times10^{-4}$ (90\% C.L.) by BESIII. In addition, we find that ${\cal B}(Λ_c^+ \to Σ^+ K^0)=(8.0\pm 1.6)\times 10^{-4}$, ${\cal B}(Λ_c^+ \to Σ^+ η^\prime)=(1.0^{+1.6}_{-0.8})\times 10^{-2}$, and ${\cal B}(Λ_c^+ \to p η^\prime)=(12.2^{+14.3}_{-\,\,\,8.7})\times 10^{-4}$, which are accessible to the BESIII experiments.

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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