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| Hauptseite > Externe Publikationen > Vita Publikationen > Light and strange hadron spectroscopy with dynamical Wilson fermions |
| Hauptseite > Externe Publikationen > Vita Publikationen > Light and strange hadron spectroscopy with dynamical Wilson fermions |
| Journal Article | FZJ-2019-01090 |
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1998
Inst.812068
Melville, NY
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Please use a persistent id in citations: doi:10.1103/PhysRevD.59.014509
Abstract: We present the final analysis of the light and strange hadron spectra from a full QCD lattice simulation with two degenerate dynamical sea quark flavors at β=5.6 on a 163×32 lattice. Four sets of sea quark masses corresponding to the range 0.69<~mπ/mρ<~0.83 are investigated. For reference we also ran a quenched simulation at βeff=6.0, which is the point of equal lattice spacing, a−1ρ. In the light sector, we find the chiral extrapolation to physical u and d masses to present a major source of uncertainty, comparable to the expected size of unquenching effects. From linear and quadratic fits we can estimate the errors in the hadron masses made from light quarks to be on a 15% level prior to the continuum extrapolation. For the hadrons with strange valence quark content, the NF=2 approximation to QCD appears not to cure the well-known failure of quenched QCD to reproduce the physical K−K* splitting.
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