Some Decay Modes of1−+Hybrid Mesons

Using the QCD sum-rule approach, we study the two-body decays into ordinary mesons of $J^{\mathrm{PC}}=1^{-+}$ quark-antiquark-gluon hybrid mesons containing $u$ and $d$ quarks. It is found that the $I=0\mathrm{}$ state is stable for these decays, while the $I=1\mathrm{}$ states decay predominantly into $\pi \rho$ with a characteristic width of 10 to 100 MeV.