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• W3106395328 startingPage "1250153" @default.
• W3106395328 abstract "We study the weak-decay constants for the heavy pseudoscalar mesons, D, D s , B and B s . For this purpose, we employ the extended nonlocal chiral-quark model (ExNLChQM), motivated by the heavy-quark effective field theory as well as the instanton-vacuum configuration. In addition to the heavy-quark symmetry and the nonlocal interactions between quarks and pseudoscalar mesons in ExNLChQM, a correction for the strange-quark content inside D s and B s is also taken into account and found to be crucial to reproduce the empirical values. From those numerical results, we obtain f D, D s , B, B s = (207.53, 262.56, 208.13, 262.39) MeV , which are in good agreement with experimental data and other theoretical estimations. Using those numerical results, we estimate the CKM matrix elements and the Cabibbo angle with the various mesonic and leptonic heavy-meson decay channels, resulting in (|V cd |, |V cs |, |V ub |, |V td |/|V ts |) = (0.224, 0.968, <5.395×10 -3 , 0.215) and θ C = 12.36° which are well compatible with available data." @default.
• W3106395328 created "2020-11-23" @default.
• W3106395328 creator A5078672118 @default.
• W3106395328 date "2012-08-23" @default.
• W3106395328 modified "2023-10-16" @default.
• W3106395328 title "HEAVY PSEUDOSCALAR-MESON DECAY CONSTANTS WITH STRANGENESS FROM THE EXTENDED NONLOCAL CHIRAL-QUARK MODEL" @default.
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• W3106395328 doi "https://doi.org/10.1142/s0217732312501532" @default.
• W3106395328 hasPublicationYear "2012" @default.
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