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Few-particle lepton bound states in variational approach
A. V. Eskin, A. P. Martynenko, F. A. Martynenko +1
The energy levels of the ground states of the three-particle and four-particle bound states of leptons in quantum electrodynamics are calculated. For the calculation, the variation…
Heavy tetraquarks in the hyperspherical approach
F. A. Martynenko, A. V. Eskin, A. P. Martynenko
Within the quark model and hyperspherical method, the bound states of four heavy quarks and antiquarks (tetraquarks) are investigated. In hyperradial approximation, the Schroedinge…
Production of heavy tetraquarks in rare exclusive decays of the Higgs boson
F. A. Martynenko, A. V. Eskin, A. P. Martynenko
The relativistic quark model is used to study the processes of heavy tetraquark production in the Higgs boson decay. We consider quark-gluon, ZZ-boson, and qua…
Production of heavy quark bound states in rare exclusive decays of Higgs boson
F. A. Martynenko, A. P. Martynenko, A. V. Eskin
The processes of pair production of S- and P- wave charmonium, as well as the production of the tetraquark (cc \bar{c} \bar{c}) in the Higgs boson decays are investigated within th…
Mass spectrum of heavy tetraquarks in variational approach
A. V. Eskin, A. P. Martynenko, F. A. Martynenko
Within the framework of the quark model and the variational method, the bound states of four heavy quarks (tetraquarks) are investigated. The basis variational wave functions are c…
Resonant states of muonic three-particle systems with lithium, helium and hydrogen nuclei
A. V. Eskin, V. I. Korobov, A. P. Martynenko +1
We study the energy spectrum of three-particle systems (He-p-μ), (He-d-μ), (Li-p-μ) and (Li-d-μ) on the basis of variational approach with exponential and Gaussian basis. Using the…
Hadronic light-by-light scattering contribution to 1S-2S transition in muonium
V. I. Korobov, F. A. Martynenko, A. P. Martynenko +1
We study hadronic light-by-light scattering contribution to the energy interval (1S-2S) in muonium. Various amplitudes of interaction of a muon and an electron are constructed, in…
Energy levels of mesonic helium in quantum electrodynamics
V. I. Korobov, A. V. Eskin, A. P. Martynenko +1
On the basis of variational method we study energy levels of pionic helium and kaonic helium with an electron in ground state and a meson in excited state wit…
Contribution of hadronic light-by-light scattering to the hyperfine structure of muonium
V. I. Korobov, A. V. Eskin, A. P. Martynenko +1
The contribution of hadronic scattering of light-by-light to the hyperfine structure of muonium is calculated using experimental data on the transition form factors of two photons…