QCD sum rule calculation for the charmonium-like structures in the J/ψϕ and J/ψω invariant mass spectra

Using the QCD sum rules we test if the charmonium-like structure Y(4274), observed in the J/ψϕ invariant mass spectrum, can be described with a DsD¯s0(2317)+h.c. molecular current with JPC=0−+. We consider the contributions of condensates up to dimension ten and we work at leading order in αs. We keep terms which are linear in the strange quark mass ms. The mass obtained for such state is mDsDs0=(4.78±0.54) GeV. We also consider a molecular 0−+DD¯0(2400)+h.c. current and we obtain mDD0=(4.55±0.49)GeV. Our study shows that the newly observed Y(4274) in the J/ψϕ invariant mass spectrum can be, considering the uncertainties, described using a molecular charmonium current.