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Neutrinoless double β-decay in76Ge

Двойной бета-распад без участия нейтрино в76Ge

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Il Nuovo Cimento A (1965-1970)

Summary

We have attempted to look for the neutrinoless double beta-decay of76Ge (J π = 0+) leading to the first excited state (J π = 2+) of76Se. By using a multicoincidence set-up between a Ge(Li) detector and seven NaI detectors, a lower limitT 1/2>2·1021 y, at 68% confidence level, has been obtained. The current theoretical situation for the76Ge double-beta-decay half-life has been also reviewed.

Riassunto

Si cerca di trovare il doppio decadimento beta senza neutrini del76Ge (J π = 0+) che porta al primo stato eccitato (J π = 2+) di76Se. Usando un dispositivo di coincidenza multipla tra un rivelatore Ge(Li) e sette rivelatori NaI, si è ottenuto un, limite inferioreT 1/2>2·1021 y ad un livello di confidenza del 68%. È stata anche riesaminata la situazione teorica corrente per la vita media del doppio decadimento beta nel76Ge.

Резюме

Мы пытаемся найти двойной бета-распад без участия нейтрино76Ge (J π = 0+), приводящий к первому возбужденном\ состоянию (J π = 2+)76Se. Используя систему совпадений между Ge(Li) детектором и семяю NaI детекторами, получается нижний пределT 1/2>2·1021 лет, со степенью достоверности 68%. Анализируется существующая теоретическая ситуация для времени двойного бетараспада76Ge.

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Authors and Affiliations

  1. Centre d'Etudes Nucléaires de Bordeaux-Gradignan, University of Bordeaux, France

    F. Leccia, Ph. Hubert, D. Dassie, P. Mennrath & M. M. Villard

  2. Instituto de Física Nuclear y Altas Energías, University of Zaragoza, Spain

    A. Morales, J. Morales & R. Nuñez-Lagos

Authors
  1. F. Leccia
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  2. Ph. Hubert
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  3. D. Dassie
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  4. P. Mennrath
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  5. M. M. Villard
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  6. A. Morales
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  7. J. Morales
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  8. R. Nuñez-Lagos
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Traduzione a cura della Redazione.

Передебено ребакуией.

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Leccia, F., Hubert, P., Dassie, D. et al. Neutrinoless double β-decay in76Ge. Nuov Cim A 78, 50–60 (1983). https://doi.org/10.1007/BF02911511

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  • DOI: https://doi.org/10.1007/BF02911511

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