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Decay width of light quark hybrid meson from the lattice

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arxiv hep-lat/0603007 v3 pith:3UUFUAEM submitted 2006-03-06 hep-lat hep-ph

C. McNeile , C. Michael This is my paper · ORCID
classification hep-lathep-ph
keywords decayhybridlatticemesonquarkwidthagreementamplitudes
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

Lattice QCD with $N_f=2$ flavours of sea quark is used to explore the spectrum and decay of a $J^{PC}=1^{-+}$ spin-exotic hybrid meson. We test lattice determination of S-wave decay amplitudes at threshold using $b_1 \to \pi \omega$ where agreement with data is found. We find a hybrid meson state at 2.2(2) GeV with a partial width to $\pi b_1$ of 400(120) MeV and to $\pi f_1$ of 90(60) MeV.

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Cited by 6 Pith papers

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