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Decay constants of charm and beauty pseudoscalar heavy–light mesons on fine lattices
Ali Khan, A., Braun, Vladimir M., Burch, Tommy, Göckeler, Meinulf, Lacagnina, G. N., Schäfer, Andreas and Schierholz, Gerrit (2007) Decay constants of charm and beauty pseudoscalar heavy–light mesons on fine lattices. Physics Letters B 652 (2-3), pp. 150-157.Date of publication of this fulltext: 22 Mar 2010 13:00
Article
DOI to cite this document: 10.5283/epub.13729
Abstract
We compute decay constants of heavy–light mesons in quenched lattice QCD with a lattice spacing of asimilar, equals0.04 fm using non-perturbatively O(a) improved Wilson fermions and O(a) improved currents. We obtain fDs=220(6)(5)(11) MeV, fD=206(6)(3)(22) MeV, fBs=205(7)(26)(17) MeV and fB=190(8)(23)(25) MeV, using the Sommer parameter r0=0.5 fm to set the scale. The first error is statistical, ...
We compute decay constants of heavy–light mesons in quenched lattice QCD with a lattice spacing of asimilar, equals0.04 fm using non-perturbatively O(a) improved Wilson fermions and O(a) improved currents. We obtain fDs=220(6)(5)(11) MeV, fD=206(6)(3)(22) MeV, fBs=205(7)(26)(17) MeV and fB=190(8)(23)(25) MeV, using the Sommer parameter r0=0.5 fm to set the scale. The first error is statistical, the second systematic and the third from assuming a ±10% uncertainty in the experimental value of r0. A detailed discussion is given in the text. We also present results for the meson decay constants fK and fπ and the ρ meson mass.
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| Item type | Article | ||||||
| Journal or Publication Title | Physics Letters B | ||||||
| Publisher: | Elsevier | ||||||
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| Volume: | 652 | ||||||
| Number of Issue or Book Chapter: | 2-3 | ||||||
| Page Range: | pp. 150-157 | ||||||
| Date | 23 August 2007 | ||||||
| Institutions | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun | ||||||
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| Classification |
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| Dewey Decimal Classification | 500 Science > 530 Physics | ||||||
| Status | Published | ||||||
| Refereed | Unknown | ||||||
| Created at the University of Regensburg | Unknown | ||||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-137297 | ||||||
| Item ID | 13729 |
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