ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A search for the decay of isoscalar penetrating particles into ane + e-pair has been performed at the nuclear power reactor Bugey 5, situated close to Lyon (France). The detector set-up, consisting of an arrangement of large-area multiwire proportional chambers, and the data analysis are described. No excess of decay events over background has been observed. For standard axions, therefrom, stringent upper limits for the branching ratio 〈Γ a /Γ M γ , averaged over the entire reactor gamma spectrum of magnetic multipolarity, have been obtained. Analysis in terms of the decay χ→e ++e − of a more general axionlike boson χ yields new constraints for the decay constantf χ which enhance existing laboratory limits considerably.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01566670
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