Meson Decay Constants from Isospin Mass Splittings in the Quark Model

Details Meson Decay Constants from Isospin Mass Splittings in the Quark Model Meson Decay Constants from Isospin Mass Splittings in the Quark Model

1992-07-11

arxiv.org/abs/hep-ph/9207235v1

Phys.Rev. D47 (1993) 3059-3062

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, LaTeX, EFI-92-31

Scientific paper

10.1103/PhysRevD.47.3059

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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