Calculation of the Bcleptonic decay constant using the shifted N-expansion method
Sameer M. Ikhdair, Ramazan Sever
Abstract
We give a review and present a comprehensive calculation for the leptonic constant Bc of the low-lying pseudoscalar and vector states of Bc-meson in the framework of static and QCD-motivated nonrelativistic potential models taking into account the one-loop and two-loop QCD corrections in the short distance coefficient that governs the leptonic constant of Bc quarkonium system. Further, we use the scaling relation to predict the leptonic constant of the nS-states of the (bbar)c system. Our results are compared with other models to gauge the reliability of the predictions and point out differences.
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