QCD sum rule calculation for the charmonium-like structures in the J/psi phi and J/psi omega invariant mass spectra

Understand

Using the QCD sum rules we test if the charmonium-like structure Y(4274), observed in the $J/\psi\phi$ invariant mass spectrum, can be described with a $D_s\bar{D}_{s0}(2317)+h.c.$ molecular current with $J^{PC}=0^{-+}$.

• We consider the contributions of condensates up to dimension ten and we work at leading order in $\alpha_s$.
• We keep terms which are linear in the strange quark mass $m_s$.
• The mass obtained for such state is $m_{D_s{D}_{s0}}=(4.80\pm 0.55)$ GeV.