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Abstract: The positrons and coincident gamma-rays following the pure Fermi 0+ 0+ branch of +-decay in 14O were measured. The Doppler shift of the -quantum observed is sensitive to the beta-neutrino correlation coefficient, which is unity ( = 1) in the absence of scalar coupling. The interatomic interaction of recoiling daughters was noticed, which has prevented to obtain an improved result for scalar...
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