Search for heavy neutrinos in K+→μ+νμ decays

Lazzeroni, C. and Ruggiero, Giuseppe (2017) Search for heavy neutrinos in K+→μ+νμ decays. Physics Letters B, 772 (Supple). pp. 712-718. ISSN 0370-2693

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Abstract

The NA62 experiment recorded a large sample of K+→μ+νμ decays in 2007. A peak search has been performed in the reconstructed missing mass spectrum. In the absence of a signal, limits in the range 2×10−6 to 10−5 have been set on the squared mixing matrix element |Uμ4|2 between muon and heavy neutrino states, for heavy neutrino masses in the range 300–375 MeV/c2. The result extends the range of masses for which upper limits have been set on the value of |Uμ4|2 in previous production search experiments.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
88616
Deposited By:
Deposited On:
09 Nov 2017 11:04
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Sep 2020 03:50