# Possible open-charmed pentaquark molecule $$\varOmega _c(3188)$$ – the $$D \varXi$$ bound state – in the Bethe–Salpeter formalism

The European Physical Journal C, May 2018

We study the S-wave $$D\varXi$$ bound state in the Bethe–Salpeter formalism in the ladder and instantaneous approximations. With the kernel generated by the hadronic effective Lagrangian, two open-charmed bound states, which quantum numbers are $$I=0$$, $$J^P=(\frac{1}{2})^-$$ and $$I=1$$, $$J^P=(\frac{1}{2})^-$$, respectively, are predicted as new candidates of hadronic pentaquark molecules in our formalism. If existing, they could contribute to the broad 3188 MeV structure near the five new narrow $$\varOmega _c$$ states observed recently by the LHCb Collaboration.

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Chao Wang, Liang-Liang Liu, Xian-Wei Kang, Xin-Heng Guo, Rui-Wu Wang. Possible open-charmed pentaquark molecule $$\varOmega _c(3188)$$ – the $$D \varXi$$ bound state – in the Bethe–Salpeter formalism, The European Physical Journal C, 2018, 407, DOI: 10.1140/epjc/s10052-018-5874-1