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Light hadron spectroscopy with two flavors of O(a)-improved dynamical quarks
http://hdl.handle.net/2241/89322
http://hdl.handle.net/2241/89322d8366f1f-1d65-46b0-9043-91a9a524d6dd
名前 / ファイル | ライセンス | アクション |
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PRD_68-5.pdf (522.0 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2007-05-21 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Light hadron spectroscopy with two flavors of O(a)-improved dynamical quarks | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者 |
Aoki, S.
× Aoki, S.× Burkhalter, R.× Fukugita, M.× Hashimoto, S.× Ishikawa, K.-I.× Ishizuka, N.× 岩崎, 洋一× Kanaya, K.× Kaneko, T.× Kuramashi, Y.× Okawa, M.× Onogi, T.× Tsutsui, N.× 宇川, 彰× Yamada, N.× Yoshie, T. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We present a high statistics study of the light hadron spectrum and quark masses in QCD with two flavors of dynamical quarks. Numerical simulations are carried out using the plaquette gauge action and the O(a)-improved Wilson quark action at β=5.2, where the lattice spacing is found to be a=0.0887(11) fm from the ρ meson mass, on a 20^3×48 lattice. At each of five sea quark masses corresponding to mPS/mV≃0.8-0.6, we generate 12 000 trajectories using a symmetrically preconditioned Hybrid Monte Carlo algorithm. Finite spatial volume effects are investigated employing 12^3×48, 16^3×48 lattices. We also perform a set of simulations in quenched QCD with the same lattice actions at a similar lattice spacing to those for the full QCD runs. In the meson sector we find clear evidence of sea quark effects. The J parameter increases for lighter sea quark masses, and the full QCD meson masses are systematically closer to experiment than in quenched QCD. Careful finite-size studies are made to ascertain that these are not due to finite-size effects. Evidence of sea quark effects is less clear in the baryon sector due to larger finite-size effects. We also calculate light quark masses and find mudMS (2 GeV)=3.223(-0.069+0.046) MeV and msMS (2 GeV)=84.5(-1.7+12.0) MeV which are about 20% smaller than in quenched QCD. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review D 巻 68, 号 5, p. 054502, 発行日 2003-09 |
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ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 2470-0010 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00773624 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.68.054502 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | (c) 2003 The American Physical Society | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Physical Society | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2241/89322 | |||||
識別子タイプ | HDL |