Magnetic dipole transition in proton-deuteron radiative capture at BBN energies within potential model
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917708664143872 |
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| author | Anh, Nguyen Le Anh, Dao Nhut Tho, Do Huy Nha, Nguyen Huu |
| author_facet | Anh, Nguyen Le Anh, Dao Nhut Tho, Do Huy Nha, Nguyen Huu |
| contents | The $pd$ radiative capture reaction plays a vital role in Big Bang nucleosynthesis and stellar proton-proton chain. The study of the low-energy reaction is challenging in both experiments and theories. Using the framework of potential model, we analyze $pd$ radiative capture below 1 MeV for both electric dipole ($E1$) and magnetic dipole ($M1$) transitions. The obtained astrophysical $S$ factors agree well with recent results, especially at energies relevant to sensitive deuterium abundance. The calculated reaction rate shows good agreement, with less than a 5\% difference compared to recent works. The extrapolated value for $S(0)$ including both transitions is determined to be $0.211 \pm 0.016$ eV b. A comparison with experimental data using the $χ^2$ test reveals the sensitivity of the $M1$ cross section at low energies to the scattering potential depth. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_03210 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Magnetic dipole transition in proton-deuteron radiative capture at BBN energies within potential model Anh, Nguyen Le Anh, Dao Nhut Tho, Do Huy Nha, Nguyen Huu Nuclear Theory The $pd$ radiative capture reaction plays a vital role in Big Bang nucleosynthesis and stellar proton-proton chain. The study of the low-energy reaction is challenging in both experiments and theories. Using the framework of potential model, we analyze $pd$ radiative capture below 1 MeV for both electric dipole ($E1$) and magnetic dipole ($M1$) transitions. The obtained astrophysical $S$ factors agree well with recent results, especially at energies relevant to sensitive deuterium abundance. The calculated reaction rate shows good agreement, with less than a 5\% difference compared to recent works. The extrapolated value for $S(0)$ including both transitions is determined to be $0.211 \pm 0.016$ eV b. A comparison with experimental data using the $χ^2$ test reveals the sensitivity of the $M1$ cross section at low energies to the scattering potential depth. |
| title | Magnetic dipole transition in proton-deuteron radiative capture at BBN energies within potential model |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2405.03210 |