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arXiv · hep-ph/9207235

Meson Decay Constants from Isospin Mass Splittings in the Quark Model

J. F. Amundson·J. L. Rosner·M. A. Kelly·N. Horowitz·S. L. Stone
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Abstract

Decay constants of $D$ and $B$ mesons are estimated within the framework of a heavy-quark approach using measured isospin mass splittings in the $D$, $D^*$, and $B$ states to isolate the electromagnetic hyperfine interaction between quarks. The values $f_D = (262 \pm 29)$ MeV and $f_B = (160 \pm 17)$ MeV are obtained. Only experimental errors are given; possible theoretical ambiguities, and suggestions for reducing them, are noted.

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J. F. Amundson, J. L. Rosner, M. A. Kelly, N. Horowitz, S. L. Stone. 1992-07-11. Meson Decay Constants from Isospin Mass Splittings in the Quark Model. https://doi.org/10.1103/physrevd.47.3059

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