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26 April 2024 |
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Scalar meson in dynamical and partially quenched two-flavor QCD: lattice results and chiral loops | | S. Prelovsek
; C. Dawson
; T. Izubuchi
; K. Orginos
; A. Soni
; | | Date: |
29 Jul 2004 | | Journal: | Phys.Rev. D70 (2004) 094503 | | Subject: | hep-lat hep-ph | | Abstract: | This is an exploratory study of the lightest non-singlet scalar $qar q$ state on the lattice with two dynamical quarks. Domain Wall fermions are used for both sea and valence quarks on a 16^3*32 lattice with an inverse lattice spacing of 1.7 GeV. We extract the scalar meson mass 1.58(34) GeV from the exponential time-dependence of the dynamical correlators with $m_{val}=m_{sea}$ and N_f=2. Since this statistical error-bar from dynamical correlators is rather large, we analyze also the partially quenched lattice correlators with $m_{val}$ not equal $m_{sea}$. They are positive for $m_{val}>=m_{sea}$ and negative for $m_{val}=m_{sea}$ and negative for $m_{val} | | Source: | arXiv, hep-lat/0407037 | | Services: | Forum | Review | PDF | Favorites | |
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