205 citations · 724 across the 55 of their papers we have counts for
11 papers · 1 filter
The Spinless Relativistic Hellmann Problem
Wolfgang Lucha, Franz F. Schöberl
We compile some easily deducible information on the discrete eigenvalue spectra of spinless Salpeter equations encompassing, besides a relativistic kinetic term, interactions which…
Compact Flavour-Exotic Tetraquarks in Large- QCD - To Be or Not to Be?
Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian
We analyse exotic tetraquark mesons - bound states formed by two quarks and two antiquarks - for the specific case of four different quark flavours within the framework of a well-d…
Strong Isospin Breaking in the Decay Constants of Heavy-Light Mesons from Local-Duality QCD Sum Rules
Wolfgang Lucha, Dmitri Melikhov, Silvano Simula
We explore, by a rather peculiar limit of QCD sum rules subject to a Borel transformation (realized by allowing the related Borel mass parameter to approach infinity), how the smal…
Are there narrow flavor-exotic tetraquarks in large- QCD?
Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian
A salient feature shared by all tetraquark candidates observed in experiment is the absence of flavor-exotic states of the type , with four different quark flavor…
Bethe-Salpeter-Motivated Modelling of Pseudo-Goldstone Pseudoscalar Mesons
Wolfgang Lucha
We apply a description of bound states of fermion and antifermion by means of our approximation to the Bethe-Salpeter formalism that retains part of the information on relativistic…
Open-Flavour Mesons from the Angle of Bethe, Dyson, Salpeter, Schwinger, et al
Thomas Hilger, María Gómez-Rocha, Andreas Krassnigg +1
Recently, we completed a comprehensive investigation of a huge part of the entire meson spectrum by considering both quarkonia and open-flavour mesons by means of a single common f…