2007年2月
First nonperturbative test of a relativistic heavy quark action in quenched lattice QCD
JOURNAL OF HIGH ENERGY PHYSICS
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- 巻
- 2007
- 号
- 2
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1088/1126-6708/2007/02/019
- 出版者・発行元
- SPRINGER
We perform a numerical test of a relativistic heavy quark(RHQ) action, recently proposed by Tsukuba group, in quenched lattice QCD at a similar or equal to 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.
- リンク情報
- ID情報
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- DOI : 10.1088/1126-6708/2007/02/019
- ISSN : 1029-8479
- Web of Science ID : WOS:000245078200019