Research Article
Mass Spectra and Decay Constants of Heavy-Light Mesons: A Case Study of QCD Sum Rules and Quark Model
Table 2
Pseudoscalar and vector decay constants of heavy-light mesons in MeV. QM denotes quark model and SR denotes sum rule calculations.
| Meson | Exp. | QM | SR | [9] | [16] | [53] |
| | 206 8.9 | 199 | 210.25 11.60 | 205.14 | 206.2 7.3 5.1 | 207.53 | ā | 249 | 253 | 245.70 7.46 | 241.84 | 245.3 15.7 4.5 | 262.56 | | 204 31 | 209 | 223.45 12.4 | 201.09 | 193.4 12.3 4.3 | 208.13 | | ā | 275 | 277.22 11 | 292.04 | 232.5 18.6 2.4 | 262.39 |
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