Heavy-Meson Decay Constants: Isospin Breaking from QCD Sum Rules
1 Institute for High Energy Physics, Austrian Academy of Sciences, Nikolsdorfergasse 18, A-1050 Vienna, Austria
2 D. V. Skobeltsyn Institute of Nuclear Physics, M. V. Lomonosov Moscow State University, 119991, Moscow, Russia
3 Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
4 INFN, Sezione di Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy
Published online: 22 March 2017
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.
© The Authors, published by EDP Sciences, 2017
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