论文标题
轴向矢量过渡形式的单一重型重子元素
Axial-vector transition form factors of the singly heavy baryons
论文作者
论文摘要
我们研究了手性夸克 - 苏里顿模型框架内最低的单层重型重子的轴向矢量过渡形式。我们将线性$ m _ {\ mathrm {s}} $校正视为奇怪的当前夸克质量$ m _ {\ mathrm {s}} $作为小扰动。由于由于异种对称性和风味SU（3）对称性破坏，我们之间存在各种关系，因此只有两个轴向矢量过渡形式是独立的。我们介绍了这些形式的数值结果。味道su（3）对称性的效果变细，因此我们忽略了它们。我们还计算了单个重型重子的几个强烈衰减的衰减率，并将结果与实验数据以及其他模型的结果进行了比较。虽然与相应的实验数据相比，$σ_c\ toλ_c\ toλ_c\ toλ_c\ toλ_c\ to to limσ_c^++π$和$σ_C^*\toλ_c^++π$衰减的结果略有高估，而这些数据的结果与$ξ_c^*\ to chopaight的实验数据相比与数据相吻合。
We investigate the axial-vector transition form factors of the lowest-lying singly heavy baryons within the framework of the chiral quark-soliton model. We consider the linear $m_{\mathrm{s}}$ corrections, dealing with the strange current quark mass $m_{\mathrm{s}}$ as a small perturbation. Since we have various relations between different transitions because of isospin symmetry and flavor SU(3) symmetry breaking, only two axial-vector transition form factors are independent. We present the numerical results for these form factors. The effects of the flavor SU(3) symmetry breaking turn out tiny, so we neglect them. We also compute the decay rates for several strong decays of the singly heavy baryons and compare the results with the experimental data and those from other models. While the results for the $Σ_c\to Λ_c^++π$ and $Σ_c^*\to Λ_c^++π$ decays are slightly overestimated in comparison with the corresponding experimental data, those for the $Ξ_c^*\to Ξ_c+π$ are in remarkable agreement with the data.
