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Search for neutrino oscillations at the nuclear power reactor in Gösgen

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Il Nuovo Cimento C

Summary

The positron spectrum from the reaction\(\bar v_e + p \to e^ + + n\) was measured at two distances 37.9 m and 45.9 m from the core of the 2.8 GW power reactor in Gösgen (Switzerland). The data were analysed in terms of two neutrino oscillations of the disappearance type\(\bar v_e \to X\). No evidence for neutrino oscillations was found and limits on the oscillation parameters Δm 2 and sin22θ were derived.

Riassunto

Si è misurato lo spettro dei positroni della reazione\(\bar v_e + p \to e^ + + n\) alle due distanze di 37.9 m e 45.9 dal nucleo del reattore di potenza di Gösgen (Svizzera). Si sono analizzati i dati in termini di due oscillazioni del tipo della sparizione\(\bar v_e \to X\). Non si è trovata alcuna prova di oscillazioni del neutrino e si sono dedotti limiti ai parametri di oscillazione Δm 2 e sin22θ.

Резюме

Измерялся спектр позитронов из реакции\(\bar v_e + p \to e^ + + n\) на двух расстояниях 37.9 м и 45.9 м от активной зоны энергетического реактора в Гэсгене (Щвейцария). Полученные данные анализируются на основе двух нейтринных осцилляций исчезающего типа\(\bar v_e \to X\). Не было обнаружено доказательств для нейтринных осцилляций. Определяются пределы для параметров осцилляций Δm 2 и sin22θ.

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Zacek, V. Search for neutrino oscillations at the nuclear power reactor in Gösgen. Il Nuovo Cimento C 9, 516–521 (1986). https://doi.org/10.1007/BF02514870

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  • DOI: https://doi.org/10.1007/BF02514870

PACS. 94.40

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