论文标题
某些异国黑龙的分子性质
The molecular nature of some exotic hadrons
论文作者
论文摘要
LHCB对$ p_c（4312）^+$和$ p_c（4450）^+$ pentaquarks的令人兴奋许多试图将真正的多Quark性质与可能的分子起源相关的理论发展。在对这些搜索的当前状态进行了简要回顾之后，本文重点介绍了最近发现或尚未发现的异国情调的重型重子，这些重磅bary子可能会从耦合通道中方便的单位化的介子 - 巴里龙相互作用模型中出现。特别是，我们将展示该模型的不同耦合通道振幅之间的干扰如何揭示存在具有梅森 - 巴里昂准结合状态的2 GEV附近的$ n^*$共鸣。我们还讨论了最近在LHCB发现的某些$ω_c$状态为强子分子的可能解释。该模型还预测了双重融合的Quasibound Meson-Baryon $ξ_{cc} $状态，这将是基于基层$ξ_{cc}（3621）$ MEV的激动状态，其质量仅是最近才建立的。这些结果将这些结果扩展到底部部门也将介绍。
The exciting discovery by LHCb of the $P_c(4312)^+$ and $P_c(4450)^+$ pentaquarks, or the suggestion of a tetraquark nature for the $Z_c(3900)$ state seen at BESIII and Belle, have triggered a lot of activity in the field of hadron physics, with new experiments planned for searching other exotic mesons and baryons, and many theoretical developments trying to disentangle the true multiquark nature from their possible molecular origin. After a brief review of the present status of these searches, this paper focusses on recently seen or yet to be discovered exotic heavy baryons that may emerge from a conveniently unitarized meson-baryon interaction model in coupled channels. In particular, we will show how interferences between the different coupled-channel amplitudes of the model may reveal the existence of a $N^*$ resonance around 2 GeV having a meson-baryon quasi-bound state nature. We also discuss the possible interpretation of some of the $Ω_c$ states recently discovered at LHCb as being hadron molecules. The model also predicts the existence of doubly-charmed quasibound meson-baryon $Ξ_{cc}$ states, which would be excited states of the ground-state $Ξ_{cc}(3621)$ MeV, whose mass has only been recently established. Extensions of these results to the bottom sector will also be presented.
