The omega-rho meson mass splitting and mixing from lattice QCD
ETM Collaboration: C. McNeile, C. Michael, C. Urbach
TL;DR
This paper uses lattice QCD with two light quark flavors to precisely determine the omega-rho meson mass difference and analyze mixing effects, providing first-principles insights into these phenomena.
Contribution
It presents the first precise lattice QCD calculation of the omega-rho mass splitting and mixing effects using maximally twisted-mass fermions.
Findings
Accurate determination of omega-rho mass difference.
Quantitative analysis of omega-rho mixing effects.
Comparison with experimental data.
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.
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