论文标题
分子$p_ψ$ pentaquarks来自Light-Meson Exchange Atatreation
Molecular $P_ψ$ pentaquarks from light-meson exchange saturation
论文作者
论文摘要
对重中膜巴里昂结合状态的频谱的理论预测是解散在实验设施中观察到的不同五角星国家的性质的基本工具。在这里，我们在一个现象学模型中探索了这一频谱，该模型描述了较重的介子 - 巴里昂的相互作用，从接触范围的相互作用方面，其中耦合强度通过轻标量表和矢量介子的交换饱和，即$σ$，$ρ$和$ω$交换。饱和度确定耦合模拟一个未知的比例常数，可以从分子候选者中校准。如果我们将$ p_in^n（4312）$作为输入，我们预测一系列分子五夸克，包括$p_ψ^n（4440）$和$p_ψ^n（4457）$，最近的$ p_ p_ {ψs}}^λ（4338）$和$ p_ $ p_ $ p_}^ψ
Theoretical predictions for the spectrum of heavy meson-baryon bound states are a fundamental tool for disentangling the nature of the different pentaquark states that have been observed in experimental facilities. Here we explore this spectrum in a phenomenological model that describes the heavy meson-baryon interaction in terms of a contact-range interaction, where the coupling strength is saturated by the exchange of light scalar and vector mesons, i.e. $σ$, $ρ$ and $ω$ exchanges. Saturation determines the couplings modulo an unknown proportionality constant that can be calibrated from a molecular candidate. If we use the $P_ψ^N(4312)$ as input, we predict a series of molecular pentaquarks including the $P_ψ^N(4440)$ and $P_ψ^N(4457)$, the recent $P_{ψs}^Λ(4338)$ and the $P_{ψs}^Λ(4459)$.
