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arXiv · 1808.07684

Strong Isospin Breaking in Heavy-Meson Decay Constants: Employing Borelized QCD Sum Rules in Local-Duality Limit

Wolfgang Lucha·Dmitri Melikhov·Silvano Simula
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Abstract

Applying the QCD sum-rule machinery in the so-called local-duality shape to heavy-light mesons reveals that, as a consequence of the non-zero mass gap between up and down quarks, the leptonic decay constants of the neutral and charged versions of the $D,$ $D^\ast,$ $B$ and $B^\ast$ mesons differ by approximately 1 MeV.

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Wolfgang Lucha, Dmitri Melikhov, Silvano Simula. 2018-08-23. Strong Isospin Breaking in Heavy-Meson Decay Constants: Employing Borelized QCD Sum Rules in Local-Duality Limit. https://doi.org/10.1051/epjconf/201819200041

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