Masses and strong decays of open charm hexaquark states Σc(∗)Σc(∗)

Inspired by the recent discovery of the doubly charmed tetraquark state Tcc+ by the LHCb Collaboration, we perform a systematic study of masses and strong decays of open charm hexaquark states Σc(∗)Σc(∗). Taking into account heavy quark spin symmetry breaking, we predict several bound states of isospin I= 0 , I= 1 , and I= 2 in the one boson exchange model. Moreover, we adopt the effective Lagrangian approach to estimate the decay widths of Σc(∗)Σc(∗)→ΛcΛc and their relevant ratios via the triangle diagram mechanism, which range from a few MeV to a few tens of MeV. We strongly recommend future experimental searches for the Σc(∗)Σc(∗) hexaquark states in the Λ _cΛ _c invariant mass distributions.