Decay width of light quark hybrid meson from the lattice . UKQCD Collaboration
نویسندگان
چکیده
Lattice QCD with N f = 2 flavours of sea quark is used to explore the spectrum and decay of a J P C = 1 −+ spin-exotic hybrid meson. We test lattice determination of S-wave decay amplitudes at threshold using b 1 → πω where agreement with data is found. We find a hybrid meson state at 2.2(2) GeV with a partial width to πb 1 of 400(120) MeV and to πf 1 of 90(60) MeV.
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