Academic Journal
Search for Double-Beta Decay of 82Se into 82Kr Excited States Using the OBELIX Installation
| Title: | Search for Double-Beta Decay of 82Se into 82Kr Excited States Using the OBELIX Installation |
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| Authors: | Barabash, A.S, Warot, G, Nagorny, S, Pagnanini, L, Pirro, S, Ponomarev, D.V, Rozov, S.V, Rukhadze, N.I, Shitov, Yu. A, Stekl, I, Khusainov, T.K, Yumatov, V.I, Yakushev, E.A |
| Contributors: | HEP, INSPIRE |
| Source: | Physics of Particles and Nuclei. 56:831-834 |
| Publisher Information: | Pleiades Publishing Ltd, 2025. |
| Publication Year: | 2025 |
| Subject Terms: | [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex] |
| Description: | A search for the processes of double beta decay of $^{82}$Se into excited states of $^{82}$Kr is conducted using the OBELIX setup. The measurements are conducted using a 600 cm$^{3}$ HPGe detector. The detector is surrounded by 6.5 kg of enriched selenium (the content of $^{82}$Se was ~92.5%). The data collected over 17 572.2 h of measurements are given. As a result, a world-record sensitivity is reached for transitions of this type. Specifically, we have found an indication of the existence of two-neutrino $^{82}$Se decay into the first 0$^{+}^{82}$Kr excited state with a half-life of $4.4_{{ - 0.9}}^{{ + 1.6}}$ × 10$^{22}$ years. |
| Document Type: | Article |
| Language: | English |
| ISSN: | 1531-8559 1063-7796 |
| DOI: | 10.1134/s106377962470237x |
| Access URL: | https://hal.science/hal-05153698v1 https://doi.org/10.1134/s106377962470237x |
| Rights: | Springer Nature TDM |
| Accession Number: | edsair.doi.dedup.....4f64e5e89d1e7c2687c98c34f492b6cc |
| Database: | OpenAIRE |
| ISSN: | 15318559 10637796 |
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| DOI: | 10.1134/s106377962470237x |