Precise measurement of the $γ$-decay probability of the Hoyle state with a new triple coincidence-detection method
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912634647871488 |
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| author | Sakanashi, K. Kawabata, T. Adachi, S. Akimune, H. Aogaki, S. Balabanski, D. L. Ban, S. R. Borcea, R. Călinescu, S. Clisu, C. Corbu, R. Costache, C. Covali, A. Cuciuc, M. Dhal, A. Dinescu, I. Florea, N. Furuno, T. Gheorghe, I. Ionescu, A. Itoh, M. Kubono, S. Kuşoğlu, A. Matsuda, Y. Mihai, C. Mihai, R. E. Neacsu, C. Nichita, D. Niina, R. Okamoto, S. Pai, H. Petruse, T. Sferrazza, M. Sîrbu, O. Söderström, P-A. Spătaru, A. Stan, L. Tamii, A. Testov, D. A. Turturica, A. Turturică, G. Ujeniuc, S. Vasilca, V. |
| author_facet | Sakanashi, K. Kawabata, T. Adachi, S. Akimune, H. Aogaki, S. Balabanski, D. L. Ban, S. R. Borcea, R. Călinescu, S. Clisu, C. Corbu, R. Costache, C. Covali, A. Cuciuc, M. Dhal, A. Dinescu, I. Florea, N. Furuno, T. Gheorghe, I. Ionescu, A. Itoh, M. Kubono, S. Kuşoğlu, A. Matsuda, Y. Mihai, C. Mihai, R. E. Neacsu, C. Nichita, D. Niina, R. Okamoto, S. Pai, H. Petruse, T. Sferrazza, M. Sîrbu, O. Söderström, P-A. Spătaru, A. Stan, L. Tamii, A. Testov, D. A. Turturica, A. Turturică, G. Ujeniuc, S. Vasilca, V. |
| contents | We measured the $γ$-decay probability of the Hoyle state with a new method of triple coincidence detection of a scattered $α$ particle, a recoil $\rm ^{12}C$ nucleus, and a $γ$ ray in inelastic alpha scattering on $\rm ^{12}C$. This method successfully enabled a low-background measurement and a precise determination of the $γ$-decay probability of the Hoyle state as $Γ_\mathrmγ/Γ=[4.00 \pm 0.22 \mathrm{(sta.)} \pm 0.18 \mathrm{(sys.)}]\times10^{-4}$, which is consistent with the previous literature value. Therefore, we concluded that the literature value can be reliably used in the study of nucleosynthesis in the universe. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_06575 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Precise measurement of the $γ$-decay probability of the Hoyle state with a new triple coincidence-detection method Sakanashi, K. Kawabata, T. Adachi, S. Akimune, H. Aogaki, S. Balabanski, D. L. Ban, S. R. Borcea, R. Călinescu, S. Clisu, C. Corbu, R. Costache, C. Covali, A. Cuciuc, M. Dhal, A. Dinescu, I. Florea, N. Furuno, T. Gheorghe, I. Ionescu, A. Itoh, M. Kubono, S. Kuşoğlu, A. Matsuda, Y. Mihai, C. Mihai, R. E. Neacsu, C. Nichita, D. Niina, R. Okamoto, S. Pai, H. Petruse, T. Sferrazza, M. Sîrbu, O. Söderström, P-A. Spătaru, A. Stan, L. Tamii, A. Testov, D. A. Turturica, A. Turturică, G. Ujeniuc, S. Vasilca, V. Nuclear Experiment We measured the $γ$-decay probability of the Hoyle state with a new method of triple coincidence detection of a scattered $α$ particle, a recoil $\rm ^{12}C$ nucleus, and a $γ$ ray in inelastic alpha scattering on $\rm ^{12}C$. This method successfully enabled a low-background measurement and a precise determination of the $γ$-decay probability of the Hoyle state as $Γ_\mathrmγ/Γ=[4.00 \pm 0.22 \mathrm{(sta.)} \pm 0.18 \mathrm{(sys.)}]\times10^{-4}$, which is consistent with the previous literature value. Therefore, we concluded that the literature value can be reliably used in the study of nucleosynthesis in the universe. |
| title | Precise measurement of the $γ$-decay probability of the Hoyle state with a new triple coincidence-detection method |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2510.06575 |