论文标题
新观察到的$λ_b（6072）^0 $结构及其$ρ-$ mode nonstrange合作伙伴
The newly observed $Λ_b(6072)^0$ structure and its $ρ-$mode nonstrange partners
论文作者
论文摘要
受到新观察到的$λ_b（6072）$结构的启发，我们研究了其在$^3p_0 $型号中的各种分配下的强衰减行为。与质量和总衰减宽度相比，我们的结果表明，$λ_b（6072）$可以被视为$λ_b$ family中的最低$ρ-$模式激发。然后，计算了$λ_b（6072）$的$ρ-$模式的强效率。发现$ j^p = 5/2^ - $ $ $ $λ_b$和$λ_c$状态相对狭窄，并且主要衰减到$σ_b^{（*）}π$和$σ_c^{（*）}π$最终状态。这两个状态具有良好的潜力，可以在将来的实验中观察到，这可能有助于我们区分三夸克模型和diquark模型。
Inspired by the newly observed $Λ_b(6072)$ structure, we investigate its strong decay behaviors under various assignments within the $^3P_0$ model. Compared with the mass and total decay width, our results suggest that the $Λ_b(6072)$ can be regarded as the lowest $ρ-$mode excitation in $Λ_b$ family. Then, the strong decays of $ρ-$mode nonstrange partners for the $Λ_b(6072)$ are calculated. It is found that the $J^P=5/2^-$ $Λ_b$ and $Λ_c$ states are relatively narrow, and mainly decay into the $Σ_b^{(*)} π$ and $Σ_c^{(*)} π$ final states, respectively. These two states have good potentials to be observed in future experiments, which may help us to distinguish the three-quark model and diquark model.
