We calculate masses of the light-quark hybrid mesons with the quantum number
0++ and 0β+ by using the QCD sum rules. Two kinds of the interpolated
currents with the same quantum number are employed. We find that the
approximately equal mass is predicted for the 0β+ hybrid state from the
different current and the different mass is obtained for the 0++ hybrid
state 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 meson through Low-energy theorem has been
examined too, and it is found that this mixing shifts the mass of hybrid meson
and glueball a little.Comment: 11 pages, Latex, 5 ps figure