4 papers
Perturbation theory for a systematic account of the bound-state motion
Alexander N. Kvinikhidze, Hagop Sazdjian, Boris Blankleider
We derive a perturbation theory (PT) for the Lorentz boost operator in the space of two-nucleon wave functions. The latter is expressed in terms of the nucleon-nucleon () poten…
Meson scattering and tetraquarks in two-dimensional QCD
Hagop Sazdjian
Two-quark--two-antiquark systems with four different quark flavors are considered in the framework of two-dimensional QCD, in the light-cone gauge, at leading orders of the $1/N_c^…
Scattering of mesons and emergence of tetraquarks in two-dimensional QCD
Hagop Sazdjian
Scattering of two mesons is considered in the framework of two-dimensional QCD in the large- limit with four different quark flavors. The scattering takes place through two…
Structure and EM form factors of purely relativistic systems
V. A. Karmanov, J. Carbonell, H. Sazdjian
The Bethe-Salpeter equation for two massive scalar particles interacting by scalar massless exchange has solutions of two types, which differ from each other by their behavior in t…