Understanding Y(4274)Y(4274) and X(4320)X(4320) in the J/ψϕJ/ψϕ invariant mass spectrum

In this work we study the structures near 4.3 GeV in the J/ψϕJ/ψϕ invariant mass spectra in B   meson decay process B+→J/ψϕK+B+→J/ψϕK+ and two photon fusion process γγ→J/ψϕγγ→J/ψϕ. The Y(4274)Y(4274) as a DsDs0DsDs0 (2317) molecular is studied in the Bethe–Salpeter equation approach with quasipotential approximation. The absence of Y(4274)Y(4274) in γγ→J/ψϕγγ→J/ψϕ channel can be well explained by the decay widths of Y(4274)Y(4274) decaying to γγ   and J/ψϕJ/ψϕ. The distribution of mass difference released by CMS Collaboration is reproduced by two resonances near 4.3 GeV, Y(4274)Y(4274) and X(4320)X(4320). The different production mechanism suggests X(4320)X(4320) observed in the B   decay should be the missing 33P133P1 charmonium state χc1″ and different from X(4350)X(4350) observed in two photon fusion which can be assigned as χc2″.