The 0⁺⁺ and 0⁻⁺mass of light quark hybrid in QCD sum rules

We calculate masses of the light-quark hybrid mesonswith the quantum number0⁺⁺and 0⁻⁺ by using the QCD sum rules. Two kinds of the interpolated currents with the same quantum numberare employed. We find that the approximately equal mass is predicted for the 0⁻⁺ hybridstate from the different current and the different mass is obtained for the 0⁺⁺ hybridstate from the different current. The prediction depends on the interaction between the gluon and quarks in the low-lying hybrid mesons. The mixing effect on the mass of the light-quark hybrid mesonthrough Low-energy theorem has been examined too, and it is found that this mixing shifts the mass of hybrid mesonand glueballa little.