论文标题
$π_1（1600）$和$η_1（1855）$
The phenomenology of the exotic hybrid nonet with $π_1(1600)$ and $η_1(1855)$
论文作者
论文摘要
我们使用lagrangian在风味对称性，平等逆转和电荷共轭下研究$ j^{pc} = 1^{ - +} $ hybrid nonet的衰减。我们使用可用的实验数据，晶格预测和风味限制来评估$π_1（1600）$的耦合强度与各种两体介体状态。使用这些耦合常数，我们估计了杂种，kaon和iSsoscalars的两体衰变的部分宽度。我们发现混合kaon几乎可以像$π_1（1600）$一样宽。非常值得注意的是，我们还发现，轻度等轴心必须显着狭窄，而重型等iSoscalar的宽度可以与最近观察到的$η_1（1855）$相匹配。
We study the decays of the $J^{PC}=1^{-+}$ hybrid nonet using a Lagrangian invariant under the flavor symmetry, parity reversal, and charge conjugation. We use the available experimental data, the lattice predictions, and the flavor constraints to evaluate the coupling strengths of the $π_1(1600)$ to various two-body mesonic states. Using these coupling constants, we estimate the partial widths of the two-body decays of the hybrid pion, kaon and the isoscalars. We find that the hybrid kaon can be nearly as broad as the $π_1(1600)$. Quite remarkably, we find also that the light isoscalar must be significantly narrow while the width of the heavy isoscalar can be matched to the recently observed $η_1(1855)$.
