Lattice QCD with Nf=2 flavours of sea quark is used to explore the spectrum and decay of a JPC=1^-+ spin-exotic hybrid meson. We test lattice determination of S-wave decay amplitudes at threshold using b₁→πω where agreement with data is found. We find a hybrid meson state at 2.2(2) GeV with a partial width to πb₁ of 400(120) MeV and to πf₁ of 90(60) MeV.
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McNeile et al. (2006) studied this question.
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