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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.05804 |
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| _version_ | 1866908755068715008 |
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| author | Alcalá, G. A. Algora, A. Estienne, M. Fallot, M. Guadilla, V. Beloeuvre, A. Gelletly, W. Kean, R. Porta, A. Bouvier, S. Stutzmann, J. -S. Bonnet, E. Eronen, T. Etasse, D. Agramunt, J. Tain, J. L. Cabrera, H. Garcia Giot, L. Laureau, A. Victoria, J. A. Molla, Y. Jaries, A. Ayoubi, L. Al Beliuskina, O. Gins, W. Hukkanen, M. Illana, A. Kankainen, A. Kujanpää, S. Moore, I. Pohjalainen, I. Pitman, D. Raggio, A. Reponen, M. Romero, J. Ruotsalainen, J. Stryjczyk, M. Tolosa, A. Virtanen, V. |
| author_facet | Alcalá, G. A. Algora, A. Estienne, M. Fallot, M. Guadilla, V. Beloeuvre, A. Gelletly, W. Kean, R. Porta, A. Bouvier, S. Stutzmann, J. -S. Bonnet, E. Eronen, T. Etasse, D. Agramunt, J. Tain, J. L. Cabrera, H. Garcia Giot, L. Laureau, A. Victoria, J. A. Molla, Y. Jaries, A. Ayoubi, L. Al Beliuskina, O. Gins, W. Hukkanen, M. Illana, A. Kankainen, A. Kujanpää, S. Moore, I. Pohjalainen, I. Pitman, D. Raggio, A. Reponen, M. Romero, J. Ruotsalainen, J. Stryjczyk, M. Tolosa, A. Virtanen, V. |
| contents | The electron spectra of the $β$ decays of $^{92}$Rb and $^{142}$Cs, key contributors to the reactor antineutrino spectrum, were measured at the IGISOL facility using radioactive beams of high isotopic purity. The shapes of the measured $β$ spectra were compared with various $β$ shape models, including first-forbidden correction factors for $ΔI^π= 0^-$ ground-state to ground-state transitions. Comparisons with previous experimental results are also provided. The shapes of the newly measured $β$ spectra are well reproduced employing feedings extracted from total absorption gamma spectroscopy measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_05804 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Study of $\boldsymbolβ$ Decay Shape Factors in First-Forbidden Transitions with $\boldsymbol{ΔI^π= 0^-}$ for Reactor Antineutrino Spectra Predictions Alcalá, G. A. Algora, A. Estienne, M. Fallot, M. Guadilla, V. Beloeuvre, A. Gelletly, W. Kean, R. Porta, A. Bouvier, S. Stutzmann, J. -S. Bonnet, E. Eronen, T. Etasse, D. Agramunt, J. Tain, J. L. Cabrera, H. Garcia Giot, L. Laureau, A. Victoria, J. A. Molla, Y. Jaries, A. Ayoubi, L. Al Beliuskina, O. Gins, W. Hukkanen, M. Illana, A. Kankainen, A. Kujanpää, S. Moore, I. Pohjalainen, I. Pitman, D. Raggio, A. Reponen, M. Romero, J. Ruotsalainen, J. Stryjczyk, M. Tolosa, A. Virtanen, V. Nuclear Experiment The electron spectra of the $β$ decays of $^{92}$Rb and $^{142}$Cs, key contributors to the reactor antineutrino spectrum, were measured at the IGISOL facility using radioactive beams of high isotopic purity. The shapes of the measured $β$ spectra were compared with various $β$ shape models, including first-forbidden correction factors for $ΔI^π= 0^-$ ground-state to ground-state transitions. Comparisons with previous experimental results are also provided. The shapes of the newly measured $β$ spectra are well reproduced employing feedings extracted from total absorption gamma spectroscopy measurements. |
| title | Study of $\boldsymbolβ$ Decay Shape Factors in First-Forbidden Transitions with $\boldsymbol{ΔI^π= 0^-}$ for Reactor Antineutrino Spectra Predictions |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2601.05804 |