Two-particle photodisintegration of the 3He and 3H nuclei in a relativistic approach with a strictly conserved EM current

Kasatkin, Yu. A.; Klepikov, V. Ph.; Kuznietsov, P.E.

doi:10.1134/s1547477115040172

Cited by 1 publication

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“…The dashed line represents calculations without accounting the non-local contact part of the diagram [10]. We provide the comparison of calculations for the approach, developed by authors in [8] with the experimental data on the cross-section energy dependence at a fixed angle of emitted nucleon [13], [14]. It can be seen that the theoretical curve is in satisfactory agreement with the experimental data from the disintegration threshold to a photon energy of 40 MeV.…”

Section: Resultsmentioning

confidence: 60%

“…The solid line represents the results of theoretical calculations. The dashed line represents calculations without accounting the non-local contact part of the diagram [10]. We provide the comparison of calculations for the approach, developed by authors in [8] with the experimental data on the cross-section energy dependence at a fixed angle of emitted nucleon [13], [14].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Amplitudes of 3H, 3He Two-Particle Photo-Breakup in Non-Local QED Approach

Kuznietsov,

Kasatkin,

Klepikov

2023

East Eur. J. Phys.

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Three-nucleon systems are essential for the investigation of many-body forces in nuclear physics. Well-grounded parametrization of their vertex functions with further application for the calculation of cross-sections in nonlocal QED approach provides the ground for investigation of the variety of multi-particle systems. In present paper we describe the process of parametrization of two-particle photo-breakup amplitudes of three-nucleon systems (3H, 3He). We provide the general description of the wave function construction for three-nucleon systems as well as the parametrization of their vertex functions accounting two- and three-nucleon interactions based on meson exchange current formalism. In our calculations we account first and second order one-pion exchange terms and the term related to the exchange of ω and ρ mesons. The three-nucleon interaction potential is given as a sum of attraction (two-pion exchange) term andappropriate repulsive part. Based on the variational ”Urbana + Model VII” amplitudes we provide the results for energy dependence of differential cross-section of 3He(γ, p)d reaction at proton angle θ = 90◦ from the threshold up to Eγ = 40 MeV and compare theoretical predictions with the available experimental data. The investigation is also provided for angular cross-section distributions at high photon energies (Eγ = 305 ± 5 MeV; 365 ± 5 MeV; 450 ± 10 MeV and 675 ± 50 MeV). Correct description of 3H, 3He photo-disintegration processes in a unified approach based on the gauge nature of the electromagnetic field implies application of this model for other multi-particle systems.

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