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| Hauptverfasser: | , , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2507.13103 |
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| _version_ | 1866911426506915840 |
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| author | Cadeddu, M. Cargioli, N. Carotenuto, G. Dordei, F. Ferro, L. Giunti, C. |
| author_facet | Cadeddu, M. Cargioli, N. Carotenuto, G. Dordei, F. Ferro, L. Giunti, C. |
| contents | The gallium anomaly, a persistent discrepancy exceeding $4σ$ in the $^{71}$Ga neutrino capture rates from $^{51}$Cr and $^{37}$Ar radioactive sources by the GALLEX, SAGE, and recently BEST experiments, has challenged particle physics and nuclear theory for over three decades. We present a new calculation of the neutrino capture cross section, abandoning the conventional leading-order approximation for electronic wave functions by numerically solving the Dirac-Coulomb equation for both bound and continuum electron states. Finally, we reevaluate the gallium anomaly, updating its global significance and presenting the most up-to-date status of its interpretation in terms of sterile neutrinos. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_13103 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Reassessing the gallium anomaly using self-consistent electron wave functions Cadeddu, M. Cargioli, N. Carotenuto, G. Dordei, F. Ferro, L. Giunti, C. High Energy Physics - Phenomenology High Energy Physics - Experiment The gallium anomaly, a persistent discrepancy exceeding $4σ$ in the $^{71}$Ga neutrino capture rates from $^{51}$Cr and $^{37}$Ar radioactive sources by the GALLEX, SAGE, and recently BEST experiments, has challenged particle physics and nuclear theory for over three decades. We present a new calculation of the neutrino capture cross section, abandoning the conventional leading-order approximation for electronic wave functions by numerically solving the Dirac-Coulomb equation for both bound and continuum electron states. Finally, we reevaluate the gallium anomaly, updating its global significance and presenting the most up-to-date status of its interpretation in terms of sterile neutrinos. |
| title | Reassessing the gallium anomaly using self-consistent electron wave functions |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2507.13103 |