Publicação: Heavy-quark symmetries in the light of nonperturbative QCD approaches
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We critically review the validity of heavy-quark spin and flavor symmetries in heavy-light decay constants, form factors and effective couplings obtained within a nonperturbative framework, the ingredients of which are all motivated by Dyson-Schwinger equations studies of QCD. Along the way, we make new predictions for two effective nonphysical couplings: gDsDK = 24.1-1.6 +2.5 and gBsBK = 33.3 -3.7 +4.0. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
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Decay constants, Effective coupling, Flavor symmetry, Form factors, Heavy-quark, Nonperturbative, Couplings, Green's function, High energy physics
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Inglês
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Proceedings of Science.
