Decay width of light quark hybrid meson from the lattice

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.

16 pages, 4 ps figures, version accepted for publication in Phys Rev D

References in corpus (24)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Practical all-to-all propagators for lattice QCD
• Light Hadron Spectroscopy with Two Flavors of Dynamical Quarks on the Lattice
• The Production and Decay of Hybrid Mesons by Flux-Tube Breaking
• Evidence for Exotic Meson Production in the Reaction ${\pi }^{-}p\to \eta {\pi }^{-}p$ at 18 GeV/c
• Exotic mesons in quenched lattice QCD
• Hybrid mesons from quenched QCD
• Effects of non-perturbatively improved dynamical fermions in QCD at fixed lattice spacing
• Observation of exotic meson production in the reaction ${\pi }^{-}p\to {\eta }^{\prime }{\pi }^{-}p$ at 18 GeV/c
• Exotic Meson Production in the $f_1(1285){\pi }^{-}$ System observed in the Reaction ${\pi }^{-}p\to \eta {\pi }^{+}{\pi }^{-}{\pi }^{-}p$ at 18 GeV/c
• Quark mass dependence of hadron masses from lattice QCD
• Orbitally excited and hybrid mesons from the lattice
• Hybrid meson decay from the lattice
• Exotic Meson Decay to $\omega {\pi }^0{\pi }^{-}$
• Light hadron spectroscopy with O(a) improved dynamical fermions
• Evidence for Exotic J^{PC}=1^{-+} Meson Production in the Reaction pi- p --> eta pi- p at 18 GeV/c
• Hadronic decay of a vector meson from the lattice
• Lattice calculation of $1^{-+}$ hybrid mesons with improved Kogut-Susskind fermions
• Hybrid and Orbitally Excited Mesons in Full QCD
• $1^{-+}$ exotic meson at light quark masses
• Efficient Hadronic Operators in Lattice Gauge Theory
• The flavour singlet mesons in QCD
• Chiral Extrapolations and Exotic Meson Spectrum
• Exotics

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