Chiral and Continuum Extrapolation of Partially-Quenched Hadron Masses
نویسندگان
چکیده
Using the finite-range regularisation (FRR) of chiral effective field theory, the chiral extrapolation formula for the vector meson mass is derived for the case of partially-quenched QCD. We re-analyse the dynamical fermion QCD data for the vector meson mass from the CP-PACS collaboration. A global fit, including finite lattice spacing effects, of all 16 of their ensembles is performed. We study the FRR method together with a naive polynomial approach and find excellent agreement (∼ 1%) with the experimental value of Mρ from the former approach. These results are extended to the case of the nucleon mass.
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