| Автор | The ALPHA Collaboration |
| Автор | Michele Della Morte |
| Автор | Stephan Dürr |
| Автор | Damiano Guazzini |
| Автор | Rainer Sommer |
| Автор | Jochen Heitger |
| Автор | Andreas Jüttner |
| Дата выпуска | 2008-02-01 |
| dc.description | We improve a previous quenched result for heavy-light pseudoscalar meson decay constants with the light quark taken to be the strange quark. A finer lattice resolution (a ≈ 0.05 fm) in the continuum limit extrapolation of the data computed in the static approximation is included. We also give further details concerning the techniques used in order to keep the statistical and systematic errors at large lattice sizes L/a under control. Our final result, obtained by combining these data with determinations of the decay constant for pseudoscalar mesons around the D<sub>s</sub>, follows nicely the qualitative expectation of the 1/m-expansion with a (relative) 1/m-term of about −0.5 GeV/m<sub>PS</sub>. At the physical b-quark mass we obtain F<sub>B<sub>s</sub></sub> = 193(7) MeV, where all errors apart from the quenched approximation are included. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Heavy-strange meson decay constants in the continuum limit of quenched QCD |
| Тип | paper |
| DOI | 10.1088/1126-6708/2008/02/078 |
| Electronic ISSN | 1029- 8479 |
| Print ISSN | 1126-6708 |
| Журнал | Journal of High Energy Physics |
| Том | 2008 |
| Первая страница | 78 |
| Последняя страница | 078 |
| Выпуск | 02 |
