| Uncertainty study of D_s~- (D~-)→ γl (l = e,μ) decays determined by wave function |
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| 作者姓名： | 侯召宇 郭鹏 吴文旺 |
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| 作者单位： | Department of Mathematics and Physics Shijiazhuang TieDao University; |
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| 基金项目： | Supported by National Science Foundation of Hebei Province of China (A2008000421) |
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| 摘 要： | Wave function is important for determining decay constants f_(D_s~-) and f_(D~-). Using the 5 types of D meson wave functions in the heavy quark limit, we studied the uncertainties of radiative pure-leptonic decays of D_s~- (D~-) mesons. The branching ratios are (1.025390-1.706812) ×10~5 and (0.953498-1.576725) ×10~6 for D_s~- and D~- decays, respectively, which are sensitive to the type of wave function.
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