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ÚTEF - Ústav technické a experimentální fyziky ČVUT - České vysoké učení technické v Praze
ČVUT - České vysoké učení technické v Praze
Publikace  > 'Two-neutrino double-β decay Fermi transition and two-nucleon interaction'
Two-neutrino double-β decay Fermi transition and two-nucleon interaction

Autor
Štefánik Dušan Comenius University, Mlynská dolina F1, SK-842 48 Bratislava, Slovakia
Šimkovic Fedor, prof. RNDr. CSc. UTEF
Muto Kazuo, Prof. Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
Faessler Amand, Prof. Institute für Theoretische Physik der Univesität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany

Rok
2013

Časopis
Phys. Rev. C 88, 025503


Obsah
An exactly solvable model for a description of the two-neutrino double-β decay transition of the Fermi type is considered. By using perturbation theory an explicit dependence of the two-neutrino double-β decay matrix element on the like-nucleon pairing, particle-particle, and particle-hole proton-neutron interactions is found by assuming a weak violation of isospin symmetry of the Hamiltonian expressed with generators of the SO(5) group. It is found that there is a dominance of double-β decay transition through a single state of the intermediate nucleus. Then, an energy-weighted sum rule connectingZ = 2 nuclei is presented and discussed. It is suggested that this sum rule can be exploited to study the residual interactions of the nuclear Hamiltonian.

Příklad citace článku:
D. Štefánik, F. Šimkovic, K. Muto, A. Faessler, "Two-neutrino double-β decay Fermi transition and two-nucleon interaction", Phys. Rev. C 88, 025503 (2013)

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