On the role of pairing correlations in calculation of \b{eta}-decay half-lives within QRPA formalism
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866913834579525632 |
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| author | Nabi, Jameel-Un Ishfaq, Mavra |
| author_facet | Nabi, Jameel-Un Ishfaq, Mavra |
| contents | In this paper we show that the proton-neutron residual interaction can play an important role in the reliability of calculated $β$-decay half-lives. It may also improve the prediction power of the quasiparticle random phase approximation (QRPA) model. We further demonstrate that a reasonable choice of the particle-particle (attractive) and particle-hole force (repulsive) parameters can result in calculated half-lives in very good comparison with the measured ones. Pairing gaps have affect on calculated half-lives which we explore in this paper. We present our half-lives calculation using the proton-neutron QRPA (pn-QRPA) model possessing a multi-shell single-particle deformed space including a schematic interaction for some medium mass neutron-deficient nuclei undergoing $β^{+}$/EC decay. Our study shows a better agreement with the available experimental data as compared to former calculations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_08509 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On the role of pairing correlations in calculation of \b{eta}-decay half-lives within QRPA formalism Nabi, Jameel-Un Ishfaq, Mavra Nuclear Theory In this paper we show that the proton-neutron residual interaction can play an important role in the reliability of calculated $β$-decay half-lives. It may also improve the prediction power of the quasiparticle random phase approximation (QRPA) model. We further demonstrate that a reasonable choice of the particle-particle (attractive) and particle-hole force (repulsive) parameters can result in calculated half-lives in very good comparison with the measured ones. Pairing gaps have affect on calculated half-lives which we explore in this paper. We present our half-lives calculation using the proton-neutron QRPA (pn-QRPA) model possessing a multi-shell single-particle deformed space including a schematic interaction for some medium mass neutron-deficient nuclei undergoing $β^{+}$/EC decay. Our study shows a better agreement with the available experimental data as compared to former calculations. |
| title | On the role of pairing correlations in calculation of \b{eta}-decay half-lives within QRPA formalism |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2505.08509 |