26-31 July 2021
Mexico City
Mexico/General timezone
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Mexico City -
Exotic Hadrons and Candidates

Cluster reducibility of multiquark operators and tetraquark-adequate QCD sum rules


  • Prof. Dmitri MELIKHOV

Primary authors


We discuss the distinguishing properties of the correlation functions of multiquark currents (tetra, penta, etc) compared to the correlation functions of bilinear and trilinear quark currents. Based on these properties, we demonstrate a proper way to construct QCD sum rules for exotic multiquark states.

Based on W.Lucha, D.Melikhov, H.Sazdjian: PRD, 014010 (2019); PRD100, 074029 (2019), PRD100, 094017 (2019); PRD103, 014012 (2021).