205 citations · 421 across the 16 of their papers we have counts for
13 papers · 1 filter
Stability in the instantaneous Bethe-Salpeter formalism: reduced exact-propagator bound-state equation with harmonic interaction
Z. -F. Li, Wolfgang Lucha, F. Schoberl
Several numerical investigations of the Salpeter equation with static confining interactions of Lorentz-scalar type revealed that its solutions are plagued by instabilities of pres…
Systematic errors of transition form factors extracted by means of light-cone sum rules
Wolfgang Lucha, Dmitri Melikhov, Silvano Simula
This talk presents results of our study of heavy-to-light transition form factors extracted with the help of light-cone sum rules. We employ a model with scalar particles interacti…
Systematic errors of bound-state parameters extracted by means of SVZ sum rules
Wolfgang Lucha, Dmitri Melikhov, Silvano Simula
This talk presents the results of our study of systematic errors of the ground-state parameters obtained by Shifman-Vainshtein-Zakharov (SVZ) sum rules. We use the harmonic-oscilla…
Can one control systematic errors of QCD sum rule predictions for bound states?
Wolfgang Lucha, Dmitri Melikhov, Silvano Simula
We study the possibility to control systematic errors of the ground-state parameters obtained by Shifman-Vainshtein-Zakharov (SVZ) sum rules, making use of the harmonic-oscillator…
Pion form factor at spacelike momentum transfers from local-duality QCD sum rule
Victor Braguta, Wolfgang Lucha, Dmitri Melikhov
We study the pion form factor in a broad range of spacelike momentum transfers within the local-duality version of QCD sum rules. We make use of the recently calculated two-loop do…
Systematic errors of bound-state parameters obtained with SVZ sum rules
Wolfgang Lucha, Dmitri Melikhov, Silvano Simula
We study systematic errors of the ground-state parameters obtained by Shifman-Vainshtein-Zakharov (SVZ) sum rules, making use of the harmonic-oscillator potential model as an examp…