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29 March 2024 |
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Bottomonium from NRQCD with Dynamical Wilson Fermions | A.Spitz
; N.Eicker
; J.Fingberg
; S.Güsken
; H.Hoeber
; Th.Lippert
; K.Schilling
; J.Viehoff
; | Date: |
29 Sep 1997 | Journal: | Nucl.Phys.Proc.Suppl. 63 (1998) 317-319 | Subject: | hep-lat | Affiliation: | SESAM-Collaboration; HLRZ/DESY and Wuppertal University | Abstract: | We present results for the b ar b spectrum obtained using an O(M_bv^6)-correct non-relativistic lattice QCD action. Propagators are evaluated on SESAM’s three sets of dynamical gauge configurations generated with two flavours of Wilson fermions at beta = 5.6. Compared to a quenched simulation at equivalent lattice spacing we find better agreement of our dynamical data with experimental results in the spin-independent sector but observe no unquenching effects in hyperfine-splittings. To pin down the systematic errors we have also compared quenched results in different ``tadpole’’ schemes and used a lower order action. | Source: | arXiv, hep-lat/9709138 | Services: | Forum | Review | PDF | Favorites |
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