Heavy-Meson Decay Constants: Isospin Breaking from QCD Sum Rules

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Abstract

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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Lucha, W., Melikhov, D., & Simula, S. (2017). Heavy-Meson Decay Constants: Isospin Breaking from QCD Sum Rules. In EPJ Web of Conferences (Vol. 137). EDP Sciences. https://doi.org/10.1051/epjconf/201713706017

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