Neutron-proton pairing in light nuclei and two-neutrino double-beta decay

Cheoun, Myung-Ki; Bobyk, A.; Faessler, Amand; Šimkovic, F.; Teneva, G.

doi:10.1016/0375-9474(93)90166-u

Cited by 114 publications

(133 citation statements)

References 22 publications

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“…We have applied this formalism to successfully describe the relevant ν-induced reaction data for 12 C [15], 56 Fe, 56 Ni [16], 138 La, and 180 Ta [17], as well as β, 2ν2β and 0ν2β decays [24]. In particular, double beta (2β) decay is well known to be sensitive to the nuclear structure and has more data than the ν-induced reaction data.…”

Section: Qrpa Frameworkmentioning

confidence: 99%

“…np , calculated from the difference between the total energies with and without np pairing correlations [24] δ emp.…”

Section: Qrpa Frameworkmentioning

confidence: 99%

“…(7) are adjusted to reproduce the empirical paring gaps. This is achieved by multiplying by strength parameters, g p , g n , g np that arise from the renormalization of the finite particle model space [24]. Detailed parameters for each nucleus are given in Sec.…”

Section: Qrpa Frameworkmentioning

confidence: 99%

“…[16,24]. The particle-particle strength parameters, g pp , are adjusted to the Gamow Teller Giant Resonance (GTGR) states and the particle-particle strength parameters, g ph , are taken as 1.0 in this calculation.…”

Section: Qrpa Frameworkmentioning

confidence: 99%

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Neutrino induced reactions forν-process nucleosynthesis of92Nb and98Tc

Cheoun

Hayakawa

et al. 2012

Phys. Rev. C

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Section: Qrpa Frameworkmentioning

confidence: 99%

“…np , calculated from the difference between the total energies with and without np pairing correlations [24] δ emp.…”

Section: Qrpa Frameworkmentioning

confidence: 99%

Section: Qrpa Frameworkmentioning

confidence: 99%

Section: Qrpa Frameworkmentioning

confidence: 99%

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Neutrino induced reactions forν-process nucleosynthesis of92Nb and98Tc

Cheoun

Hayakawa

et al. 2012

Phys. Rev. C

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“…The importance of the np pairing was also discussed in our early reports through calculations of both single-and double-β decay transitions [2,3]. But, they were performed using spherical QRPA, which did not include the deformation explicitly.…”

Section: Introductionmentioning

confidence: 99%

Neutron-Proton Pairing Effects on the Gamow-Teller Transitions in^24,26Mg by Using the Deformed QRPA

Ha¹,

Cheoun²

2017

Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)

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We investigated the effects of the neutron-proton (np) pairing correlations on the Gamow-Teller (GT) transition of 24,26 Mg by taking into account the deformation. Our calculations is performed within the deformed quasi-particle random phase approximation (DQRPA) which explicitly includes the deformation at the BCS and RPA stage. In this work, we include the np pairing as well as the nn and pp paring correlations to the DQRPA. Our new formalism is applied to the GT transition of the well known deformed Mg isotopes. The np pairing effect is found to affect the GT distribution of 24 Mg and 26 Mg. Correlations between the deformation and the np pairing are also discussed with the comparison to the experimental GT transition data by triton and 3 He beams.

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Ground State Particle–Particle Correlations and Double-Beta Decay

et al. 2001

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A self-consistent formalism for the double-beta decay of Fermi type is provided. The particleparticle channel of the two-body interaction is considered first in the mean field equations and then in the quasiparticle random phase approximation (QRPA). The resulting approach is called the QRPA with a self-consistent mean field (QRPASMF). The mode provided by QRPASMF does not collapse for any strength of the particle-particle interaction. The transition amplitude for double-beta decay is almost insensitive to the variation of the particle-particle interaction. Comparing it with the result of the standard pnQRPA, it is smaller by a factor of 6. The prediction for transition amplitude agrees quite well with the exact result. The present approach is the only one that produces a strong decrease of the amplitude and at the same time does not alter the stability of the ground state. C 2001 Elsevier Science

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Neutron-proton pairing in light nuclei and two-neutrino double-beta decay

Cited by 114 publications

References 22 publications

Neutrino induced reactions forν-process nucleosynthesis of92Nb and98Tc

Neutrino induced reactions forν-process nucleosynthesis of92Nb and98Tc

Neutron-Proton Pairing Effects on the Gamow-Teller Transitions in^24,26Mg by Using the Deformed QRPA

Ground State Particle–Particle Correlations and Double-Beta Decay

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Neutron-proton pairing in light nuclei and two-neutrino double-beta decay

Cited by 114 publications

References 22 publications

Neutrino induced reactions forν-process nucleosynthesis of92Nb and98Tc

Neutrino induced reactions forν-process nucleosynthesis of92Nb and98Tc

Neutron-Proton Pairing Effects on the Gamow-Teller Transitions in24,26Mg by Using the Deformed QRPA

Ground State Particle–Particle Correlations and Double-Beta Decay

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Neutron-Proton Pairing Effects on the Gamow-Teller Transitions in^24,26Mg by Using the Deformed QRPA