205 citations · 724 across the 55 of their papers we have counts for
8 papers · 1 filter
Tetraquark Properties at Large
Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian
Considering quantum chromodynamics in the consistent limit of simultaneous correlated increase of the number of colours, , beyond bounds and decrease of the strong coupl…
Multiquark-Adequate QCD Sum Rules: the Case of Flavour-Exotic Tetraquarks
Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian
Frequently, theoretical discussions of multiquark hadron states prove to be contaminated or even dominated by contributions of conventional hadrons. For the approach to QCD bound s…
Tetraquark-adequate QCD sum rules for quark-exchange processes
Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian
We consider quark-hadron duality relations and QCD sum rules for correlators involving exotic tetraquark currents, here specializing to the case of quark-exchange processes. We poi…
Tetraquark-Adequate QCD Sum Rules
Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian
With the experimental observation of several credible candidates for multiquark hadrons, the latter states re-entered the focus of interest of theoretical strong-interaction physic…
Flavour-Exotic Tetraquarks in Large- QCD: Do They Exist?
Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian
Flavour-exotic tetraquark mesons, by definition bound states of two quarks and two antiquarks of four mutually different quark flavours, are, for given Lorentz features, subject to…
Semirelativistic Bound States: (Pseudo-) Spinless-Salpeter Approaches Reassessed
Wolfgang Lucha
Relativistic quantum field theory offers, in form of the homogeneous Bethe-Salpeter framework, a (Poincaré-covariant) description of bound states in terms of their underlying theor…