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VOLUME 69 (1999) | ISSUE 10 | PAGE 681
The effect of γ-radiation on the determination of the antineutrino angular distribution from experiments on the β-decay of polarized neutrons
PACS: 12.15.Lk, 13.10.+q, 13.40.Ks
In experiments on the /З-decay of polarized neutrons where only the electron and proton momentum distributions are observed and the 7-radiation is not registered, the asymmetry factor В of the antineutrino angular distribution cannot be obtained rigorously the value of В is only estimated on the average by taking into consideration the expectation (mean) value (B) and the rms deviation AB. The resulting unavoidable ambiguities in the determination of В amount to several per cent, which is significant for the present-day experimental attempts to obtain В to very high precision ~(0.1-1)%.