HIGHLIGHTS
- who: Wolfgang Lucha and colleagues from the InstitutNikolsdorfergasse, Vienna, Austria State University have published the research work: Tetraquark-adequate formulation of QCD sum rules, in the Journal: (JOURNAL) of 10/07/2019
- what: This paper focuses on subtleties of the description of tetraquark mesons by Shifman-Vainshtein-Zakharov (SVZ) sum rules in QCD ; the authors demonstrate that some essential criteria for selecting QCD diagrams relevant for tetraquark properties within QCD sum rules have not been properly taken into account. The authors demonstrate that, for Green functions involving tetraquark currents, this picture requires serious modifications.
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