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首页> 外文期刊>Physical review, D >Spectrum of the strange hidden charm molecular pentaquarks in chiral effective field theory
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Spectrum of the strange hidden charm molecular pentaquarks in chiral effective field theory

机译：手性有效场理论中奇怪隐藏的魅力分子五态的光谱

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We calculate the effective potentials of the Ξ c D ˉ ( * ) , Ξ c ′ D ˉ ( * ) , and Ξ c * D ˉ ( * ) system s with the chiral effective field theory up to the next-to-leading order. We simultaneously consider the short-, intermediate-, and long-range interactions. With the newly observed P c spectra as inputs, we construct the quark-level contact Lagrangians to relate the low energy constants to those of Σ c D ˉ ( * ) with the help of the quark model. Our calculation indicates there are seven bound states in the I = 0 strange hidden charm [ Ξ c ′ D ˉ ( * ) ] J ( J = 1 2 , 3 2 ) and [ Ξ c * D ˉ ( * ) ] J ( J = 1 2 , 3 2 , 5 2 ) systems. Our analyses also disfavor the Λ c D ˉ ( * ) bound states. However, we obtain three new hadronic molecules in the isoscalar [ Ξ c D ˉ ( * ) ] J ( J = 1 2 , 3 2 ) systems. The masses of [ Ξ c D ˉ ] 1 / 2 , [ Ξ c D ˉ * ] 1 / 2 , and [ Ξ c D ˉ * ] 3 / 2 are predicted to be 4319.4 ? 3.0 + 2.8 ? ? MeV , 4456.9 ? 3.3 + 3.2 ? ? MeV , and 4463.0 ? 3.0 + 2.8 ? ? MeV , respectively. We also notice the one-eta-exchange influence is rather feeble. Binding solutions in the I = 1 channels are nonexistent. We hope the future analyses at LHCb can seek for these new P c s s in the J ψ Λ final states, especially near the thresholds of Ξ c D ˉ ( * ) .
机译：我们计算了ξcdˉ（*），ξc'dˉ（*），ξc *dˉ（*）系统S的有效电位，并通过手性有效现场理论达到下一至领先的订单。我们同时考虑短，中间和远程相互作用。随着新观察到的P C光谱作为输入，我们在夸克模型的帮助下构造夸克级联系Lagrangians将低能量常数与σcdˉ（*）的低能量常数联系起来。我们的计算指示I = 0奇怪隐藏魅力[ξC'dˉ（*）] j（j = 1 2,3 2）和[ξc *dˉ（*）]] j（j = 1 2,3 2,5 2）系统。我们的分析还涉及λcdˉ（*）绑定状态。然而，我们在isoscalar [ξCdˉ（*）] J（J = 1 2,32）系统中获得了三种新的重整分子。预计[ξc dˉ] 1/2，[ξc d×*] 1/2和[ξcdˉ*] 3/2的质量为4319.4？ 3.0 + 2.8？还MEV，4456.9？ 3.3 + 3.2？还MEV，4463.0？ 3.0 + 2.8？还MeV分别。我们还注意到一个ETA交换影响力相当虚弱。 I = 1个通道中的绑定解决方案不存在。我们希望LHCB的未来分析可以在Jψλ最终状态下寻求这些新的P C S S，特别是接近ξCdˉ（*）的阈值。

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