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arXiv · hep-lat/0603007

Decay width of light quark hybrid meson from the lattice

C. McNeile·C. Michael
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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 $b_1 \to πω$ 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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BibTeXRIS

C. McNeile, C. Michael. 2006-04-13. Decay width of light quark hybrid meson from the lattice. https://doi.org/10.1103/physrevd.73.074506

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