发表机构
The Ohio State University（俄亥俄州立大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
基于QCD玻恩-奥本海默近似，识别隐重五夸克态为束缚态，预测其量子数及数量，并给出衰变模型无关预测。
AI 中文摘要
隐重五夸克态可以被识别为非绝热玻恩-奥本海默势中的束缚态，这些势在短距离处是排斥性的色-库仑势，在重强子对阈值以下交叉，然后在长距离处趋近该阈值。我们将五夸克态 $P_{c\ar{c}}(4312)^+$、$P_{c\ar{c}}(4337)^+$、$P_{c\ar{c}}(4440)^+$ 和 $P_{c\ar{c}}(4457)^+$ 识别为与自旋-$3/2$ 伴随重子相关的两个耦合势中 $c \ar c$ 的基态四重态。我们预测它们的 $J^P$ 量子数分别为 $\ rac{1}{2}^-$、$\ rac{3}{2}^-$、$\ rac{3}{2}^-$ 和 $\ rac{5}{2}^-$。我们对 $P_{c\ar{c}}(4457)^+$ 的预测与几乎所有先前的预测不同。我们预测只有四个隐粲五夸克态，这与简单分子模型预测应有七个的结论有本质区别。我们将奇异隐粲五夸克态 $P_{c\ar{c}s}(4338)^0$ 和 $P_{c\ar{c}s}(4459)^0$ 识别为与自旋-$1/2$ 奇异伴随重子相关的势中 $c \ar c$ 基态三重态的两个成员。我们还提出了五夸克态衰变为粲偶素加轻重子以及衰变为粲重子加粲介子的模型无关预测。
英文摘要
Hidden-heavy pentaquarks can be identified as bound states in diabatic Born-Oppenheimer potentials that are repulsive color-Coulomb potentials at short distance, cross below a heavy-hadron-pair threshold, and then approach that threshold at long distance. We identify the pentaquarks $P_{c\bar{c}}(4312)^+$, $P_{c\bar{c}}(4337)^+$, $P_{c\bar{c}}(4440)^+$, and $P_{c\bar{c}}(4457)^+$ as the ground-state quartet for $c \bar c$ in the two coupled potentials associated with a spin-$3/2$ adjoint baryon. We predict that their $J^P$ quantum numbers are $\frac{1}{2}^-$, $\frac{3}{2}^-$, $\frac{3}{2}^-$, and $\frac{5}{2}^-$, respectively. Our prediction for $P_{c\bar{c}}(4457)^+$ differs from almost all previous predictions. Our prediction that there are only four hidden-charm pentaquarks differs qualitatively from that of simple molecular models that there should be seven. We identify the strange hidden-charm pentaquarks $P_{c\bar{c}s}(4338)^0$ and $P_{c\bar{c}s}(4459)^0$ as two members of the ground-state triplet for $c \bar c$ in the potential associated with a spin-$1/2$ strange adjoint baryon. We also present model-independent predictions for pentaquark decays into charmonium plus a light baryon and into a charm baryon and a charm meson.
Comments54 pages, 9 figures, 9 tables
