| Автор | A Pagnamenta |
| Автор | K K Gupta |
| Автор | A N Mitra |
| Автор | N N Singh |
| Автор | R Ramanathan |
| Дата выпуска | 1990-05-01 |
| dc.description | Leptonic decay widths for pseudoscalar mesons are calculated in a QCD-motivated Bethe-Salpeter formalism on a two-tier basis. This model, which is characterised by a Lorentz-invariant confining kernel that depends on the relativistic reduced mass defined in accordance with the Wightman-Garding definition of the internal 4-momenta q<sub>mu </sub>, has already shown precision fits to the spectra of qq, qQ and qqq hadrons apart from exhibiting an explicit Regge-asymptotic behaviour (M<sup>2</sup> approximately N). The leptonic decay constants thus obtained with no free parameters, are (in MeV units), f<sub>P</sub>=134( pi ), 166(K); 158(D); 94.9(B), 114(B<sub>s</sub>). The decreasing trend with increasing mismatch in the constituent quark masses seems to be in accord with the latest lattice results. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The decay constants of heavy-light mesons in a two-tier Bethe-Salpeter model |
| Тип | paper |
| DOI | 10.1088/0954-3899/16/5/005 |
| Electronic ISSN | 1361-6471 |
| Print ISSN | 0954-3899 |
| Журнал | Journal of Physics G: Nuclear and Particle Physics |
| Том | 16 |
| Первая страница | 677 |
| Последняя страница | 682 |
| Аффилиация | A Pagnamenta; Dept. of Phys., Delhi Univ., India |
| Аффилиация | K K Gupta; Dept. of Phys., Delhi Univ., India |
| Аффилиация | A N Mitra; Dept. of Phys., Delhi Univ., India |
| Аффилиация | N N Singh; Dept. of Phys., Delhi Univ., India |
| Аффилиация | R Ramanathan; Dept. of Phys., Delhi Univ., India |
| Выпуск | 5 |
