Heavy-Meson Decay Constants: Isospin Breaking from QCD Sum Rules
classification
✦ hep-ph
hep-latnucl-th
keywords
breakingconstantsdecayheavy-mesonisospinmesonsrulesagrees
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Compared with lattice QCD, isospin breaking of heavy-meson decay constants from QCD sum rules agrees for $D$ mesons but disagrees (by a factor of four) for $B$ mesons.
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