arXiv:0902.3897·v1·High Energy Physics — Lattice
The omega-rho meson mass splitting and mixing from lattice QCD
ETM Collaboration: C. McNeile🇬🇧 · C. Michael🇬🇧 · C. Urbach🇩🇪
Abstract
We compare flavour singlet and non-singlet vector mesons from first principles using lattice QCD. With N_f=2 flavours of light quark, this addresses the omega-rho mass difference. Using maximally twisted-mass lattice QCD, we are able for the first time to determine this mass difference precisely and we compare with experiment. We also discuss omega-rho mixing effects arising within QCD through the u-d quark mass difference.
Comments: 12 pages 4 figures