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Decay width of light quark hybrid meson from the lattice

McNeile, C. and Michael, C. (2006) Decay width of light quark hybrid meson from the lattice. Physical Review D, 73 . Article Number: 074506. ISSN 1550-2368 (online); 1550-7998 (print)

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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.

Item Type: Article LTH 691. arXiv Number:arXiv: hep-lat/0603007v3. Additional citation information: PHYSICAL REVIEW D 73, 074506 (2006); 1550-7998/2006/73(7)/074506(8). 8 Pages. Published 17 April 2006. Issue: April 2006. FERMION; LATTICE FIELD THEORY; GAUGE FIELD THEORY; SU(3); FLAVOR; MESON; HYBRID; WIDTH; HADRONIC DECAY; NUMERICAL CALCULATIONS; MONTE CARLO Q Science > QC Physics Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences 10.1103/PhysRevD.73.074506 ©2006 The American Physical Society. http://arxiv.org/abs/hep-lat/0603007 Yes Published 380 27 Oct 2008 11:10 20 May 2011 16:43

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