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Physics Letters B

Volume 354, Issues 3–4, 20 July 1995, Pages 481-485
Physics Letters B

A direct limit on the heavy neutrino in tritium beta decay

https://doi.org/10.1016/0370-2693(95)00594-BGet rights and content

Abstract

On a combined tritium beta decay sample in excess of one billion events per keV at energies near 1.5 keV, a search for a 17 keV neutrino admixture has been performed using a derivative method. No heavy neutrino signal was observed. This direct result is independent of theoretical details as well as experimental subtractions and corrections.

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