论文标题
奇怪的隐藏式charm $ p_ {ψs}^λ（4459）$和$ p_ {ψs}^λ（4338）$ pentaquarks和其他$ p_ {ψs}^λ$，$ p_ p_ {ψss}}^$ p_ {ψ$ and $ p_ p_ =
Strange hidden-charm $P_{ψs}^Λ(4459)$ and $P_{ψs}^Λ(4338)$ pentaquarks and additional $P_{ψs}^Λ$, $P_{ψs}^Σ$ and $P_{ψss}^N$ candidates in a quark model approach
论文作者
论文摘要
隐藏的charm pentaquark $ p_ {ψs}^λ（4459）^0 $和$ p_ {ψs}}^λ（4338）$ resonances $ resonances在一个构造夸克模型中作为分子中间中间 - bary子结构进行了研究。在$ j^p（i）= \ frac {1} {2}^ - （0）$通道中发现了这样的状态，该通道具有质量和宽度与耦合通道计算中的实验测量值兼容，并限制了从以前的研究中限制的所有参数。在$ J^p = \ frac {1} {2}^ - $，$ \ frac {3} {2} {2}^ - $和$ \ frac {5} {2} {2}^ - $ cannelels in the Charm和botton sectors中，带有Isospins $ 0 $ 0 $ 0 $ 0 $ p_ { $ p_ {υs}^λ$）和$ 1 $（$ p_ {ψs}^σ$和$ p_ {υs}^σ$）。此外，形式主义是扩展的，以研究$ p_ {ψs}^n $（$ p_ {$ p_ {∂ss}^n $）pentaquarks，其中预测八名候选人被预测为$ \ bar d_s d_sξ_c$ molecules in $ $ \ frac {3} {2}^ - $和$ \ frac {5} {2}^ - $ the Charm sector，九个候选人为底部的$ b_sξ_b$。
Hidden-charm pentaquark-like $P_{ψs}^Λ(4459)^0$ and $P_{ψs}^Λ(4338)$ resonances are studied in a constituent quark model as molecular meson-baryon structures. Such states are found in the $J^P(I)=\frac{1}{2}^-(0)$ channel with masses and widths compatible with the experimental measurements in a coupled-channels calculation with all the parameters constrained from previous studies. Other candidates are explored in the $J^P=\frac{1}{2}^-$, $\frac{3}{2}^-$ and $\frac{5}{2}^-$ channels in the charm and bottom sectors, with isospins $0$ ($P_{ψs}^Λ$ and $P_{Υs}^Λ$) and $1$ ($P_{ψs}^Σ$ and $P_{Υs}^Σ$). Additionally, the formalism is extended to study the $P_{ψss}^N$ ($P_{Υss}^N$) pentaquarks, where eight candidates are predicted as $\bar D_s Ξ_c$ molecules in $I=\frac{1}{2}$, with $J^P=\frac{1}{2}^-$, $\frac{3}{2}^-$ and $\frac{5}{2}^-$ for the charm sector and nine candidates as $B_s Ξ_b$ for the bottom one.
