Abstract
In experiments on the β decay of polarized neutrons where only the electron and proton momentum distributions are observed and the γ radiation is not registered, the asymmetry factor B of the antineutrino angular distribution cannot be obtained rigorously — the value of B is only estimated on the average by taking into consideration the expectation (mean) value 〈B〉 and the rms deviation ΔB. The resulting unavoidable ambiguities in the determination of B amount to several percent, which is significant for the present-day experimental attempts to obtain B to very high precision ∼(0.1–1)%.
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Pis’ma Zh. Éksp. Teor. Fiz. 69, No. 10, 681–685 (25 May 1999)
Published in English in the original Russian journal. Edited by Steve Torstveit.
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Bunatian, G.G. The effect of γ radiation on the determination of the antineutrino angular distribution from experiments on the β decay of polarized neutrons. Jetp Lett. 69, 728–733 (1999). https://doi.org/10.1134/1.568082
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DOI: https://doi.org/10.1134/1.568082