Journal
PHYSICS LETTERS B
Volume 550, Issue 1-2, Pages 8-15Publisher
ELSEVIER
DOI: 10.1016/S0370-2693(02)02769-7
Keywords
neutrino mixing; neutrino decay
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Limits at 90% c.l. on the square of the mixing strength \U-tau4\(2) between v(tau) and a mostly isosing let heavy neutrino with mass in the range 10-290 MeV/c(2) are reported. The results were derived using the negative result of a search for neutral particles decaying into two electrons conducted by the CHARM Collaboration in a neutrino beam dump experiment. Upper limits, congruent to10(-4) were obtained for neutrino masses larger than 160 MeV/c(2). (C) 2002 Elsevier Science B.V. All rights reserved.
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