Decay width of light quark hybrid meson from the lattice

2006/03/31 by Craig McNeile, C. McNeile, C. Michael · 198 citations
Physics and Astronomy · #Amplitude #B meson #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #hep-lat #hep-ph

paper · pdf · doi:10.1103/physrevd.73.074506

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 73(7) (American Physical Society) · 16 pages, 4 ps figures, version accepted for publication in Phys Rev D

arxiv created 2006/04/13 · openalex publication_date 2006/04/17 · arxiv updated 2016/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Lattice QCD with N_f=2 flavours of sea quark is used to explore the spectrum and decay of a J^PC=1^\ensuremath-+ spin-exotic hybrid meson. We test lattice determination of S-wave decay amplitudes at threshold using b₁\ensuremath→\ensuremathπ\ensuremathω where agreement with data is found. We find a hybrid meson state at 2.2(2) GeV with a partial width to \ensuremathπb₁ of 400(120) MeV and to \ensuremathπf₁ of 90(60) MeV.

Citations

• Quark mass dependence of hadron masses from lattice QCD
• 1−+exotic meson at light quark masses
• The production and decay of hybrid mesons by flux-tube breaking
• Hybrid mesons from quenched QCD
• Lattice calculation of1−+hybrid mesons with improved Kogut-Susskind fermions
• Chiral extrapolations and exotic meson spectrum
• Light hadron spectroscopy withO(a)<mml:mn/>improved dynamical fermions
• Exotic Meson Decay toωπ0π−
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Exotic meson production in the f1(1285)π− system observed in the reaction π−p→ηπ+π−π−p at 18 GeV/c

Cited by

• Properties of light scalar mesons from lattice QCD
• Light baryon masses with dynamical twisted mass fermions
• Nucleon Spin and Momentum Decomposition Using Lattice QCD Simulations