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New limits on the 17 keV neutrino

Chen, M. and Imel, D. A. and Radcliffe, T. J. and Henrikson, H. and Boehm, F. (1992) New limits on the 17 keV neutrino. Physical Review Letters, 69 (22). pp. 3151-3154. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:CHEprl92

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Abstract

We present results of new measurements of the β spectrum of 35S, using the Caltech double-focusing, iron-free β spectrometer. Our data show no evidence for a heavy neutrino with a mass between 12 and 22 keV admixed to the usual light neutrino. In particular, we rule out, at the 6σ level, a 17 keV neutrino admixed at 0.85%, and give an upper limit (90% C.L.) of 0.2% for such a neutrino admixture. To demonstrate that our experiment is sensitive to spectral features such as those from heavy neutrinos we have induced an artificial kink by means of an absorber foil covering part of the source.


Item Type:Article
Additional Information:©1992 The American Physical Society. Received 20 July 1992. We wish to thank Petr Vogel for generous advice throughout this work. The help of H.-W. Becker, V. Novikov, and A. Young is gratefully acknowledged. The research was supported by the Department of Energy under Grant No. DE-FG03-88ER40397.
Subject Keywords:BETA-DECAY; HEAVY NEUTRINOS; 17-KEV NEUTRINO; SEARCH; S-35; SPECTRUM; EMISSION
Record Number:CaltechAUTHORS:CHEprl92
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:CHEprl92
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.69.3151
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8675
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:06 Sep 2007
Last Modified:26 Dec 2012 09:41

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