摘要
Wave function is important for determining decay constants fDs^- and fD^-. Using the 5 types of D meson wave functions in the heavy quark limit, we studied the uncertainties of radiative pure-leptonic decays of Ds^-（D^-） mesons. The branching ratios are （1.025390-1.706812） ×10^-5 and （0.953498-1.576725）×10^-6 for DS and D^- decays, respectively, which ave sensitive to the type of wave function.
Wave function is important for determining decay constants fDs^- and fD^-. Using the 5 types of D meson wave functions in the heavy quark limit, we studied the uncertainties of radiative pure-leptonic decays of Ds^-（D^-） mesons. The branching ratios are （1.025390-1.706812） ×10^-5 and （0.953498-1.576725）×10^-6 for DS and D^- decays, respectively, which ave sensitive to the type of wave function.
基金
Supported by National Science Foundation of Hebei Province of China (A2008000421)
