First nonperturbative test of a relativistic heavy quark action in quenched lattice QCD
書誌事項
- 公開日
- 2007-02-07
- DOI
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- 10.1088/1126-6708/2007/02/019
- 10.48550/arxiv.hep-lat/0611033
- 公開者
- Springer Science and Business Media LLC
説明
We perform a numerical test of a relativistic heavy quark(RHQ) action, recently proposed by Tsukuba group, in quenched lattice QCD at $a\simeq 0.1$ fm. With the use of the improvement parameters previously determined at one-loop level for the RHQ action, we investigate a restoration of rotational symmetry for heavy-heavy and heavy-light meson systems around the charm quark mass. We focused on two quantities, the meson dispersion relation and the pseudo-scalar meson decay constants. It is shown that the RHQ action significantly reduces the discretization errors due to the charm quark mass. We also calculate the S-state hyperfine splittings for the charmonium and charmed-strange mesons and the $D_s$ meson decay constant. The remaining discretization errors in the physical quantities are discussed.
21 pages, 16 figures. A reference and a comment added, a major modification in appendix, several minor changes in the abstract and the main text. Errors in affiliation are corrected. Version appeared in JHEP
収録刊行物
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- Journal of High Energy Physics
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Journal of High Energy Physics 2007 (02), 019-019, 2007-02-07
Springer Science and Business Media LLC
