Title: Dynamically-generated baryon resonances with heavy flavor Show Chinese title

Title: 动态生成的含重夸克重子共振态

Abstract: We study baryon resonances with heavy flavor in a molecular approach, thus as dynamically generated by meson-baryon scattering. This is accomplished by using a unitary coupled-channel model taking, as bare interaction, the extension to four flavors and spin symmetry of the Weinberg-Tomozawa interaction potential. A special attention is paid to the inclusion of heavy-quark spin symmetry and to the studies of the generated baryon resonances which complete the heavy-quark spin multiplets. We reproduce few charmed and strange baryon resonances found experimentally, that is, \Lambda_c(2595), \Lambda_c(2625), \Xi_c(2790), \Xi_c(2815), and make predictions for more states. The bottom-flavored \Lambda_b(5912) and \Lambda_b(5920) states, found by the LHCb collaboration, are also obtained by our model, thus these resonances can be interpreted as molecular states. We also study \Xi_b resonances, which belong to the same SU(3) x HQSS multiplets as the observed \Lambda_b particles. Finally we analyze hidden-charm baryon resonances. In this sector, we predict seven N-like and five \Delta-like states with masses around 4 GeV, most of them as bound states, and compare them with predictions from other models. The predicted states can be searched for in future experiments that involve studies of heavy-flavor physics, e.g. PANDA/FAIR, where charm physics will be analyzed. Show Chinese abstract

Abstract: 我们通过分子方法研究具有重味的重子共振态，因此这些共振态是通过介子-重子散射动态生成的。 这是通过使用一个单位耦合通道模型来实现的，其中裸相互作用是Weinberg-Tomozawa相互作用势的扩展，包括四种味道和自旋对称性。 特别关注了重夸克自旋对称性的包含，以及对生成的重子共振态的研究，这些共振态完善了重夸克自旋多重态。 我们再现了实验中发现的一些奇夸克和魅夸克重子共振态，即\Lambda _c(2595)、\Lambda _c(2625)、\Xi _c(2790)、\Xi _c(2815)，并对更多状态进行了预测。 LHCb合作组发现的底夸克风味\Lambda _b(5912) 和\Lambda _b(5920) 状态也由我们的模型得到，因此这些共振态可以被解释为分子态。 我们还研究了属于与观测到的\Lambda _b 粒子相同 SU(3) x HQSS 多重态的\Xi _b 共振态。 最后我们分析了隐 charm 重子共振态。 在这一领域，我们预测了七个类似 N 和五个类似\Delta 的状态，质量约为 4 GeV，其中大多数作为束缚态，并与其他模型的预测进行比较。 这些预测的状态可以在涉及重味物理研究的未来实验中进行搜索，例如 PANDA/FAIR，其中将分析 charm 物理。