Improved search for heavy neutrinos in the decay π →eν

(PIENU Collaboration)

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A search for massive neutrinos has been made in the decay π+→e+ν. No evidence was found for extra peaks in the positron energy spectrum indicative of pion decays involving massive neutrinos (π→e+νh). Upper limits (90% C.L.) on the neutrino mixing matrix element |Uei|2 in the neutrino mass region 60-135 MeV/c2 were set and are an order of magnitude improvement over previous results.

Original languageEnglish
Article number074011
JournalPhysical Review D
Volume97
Issue number7
DOIs
Publication statusPublished - Apr 1 2018

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neutrinos
decay
positrons
energy spectra
pions
matrices

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Improved search for heavy neutrinos in the decay π →eν. / (PIENU Collaboration).

In: Physical Review D, Vol. 97, No. 7, 074011, 01.04.2018.

Research output: Contribution to journalArticle

(PIENU Collaboration). / Improved search for heavy neutrinos in the decay π →eν. In: Physical Review D. 2018 ; Vol. 97, No. 7.
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abstract = "A search for massive neutrinos has been made in the decay π+→e+ν. No evidence was found for extra peaks in the positron energy spectrum indicative of pion decays involving massive neutrinos (π→e+νh). Upper limits (90{\%} C.L.) on the neutrino mixing matrix element |Uei|2 in the neutrino mass region 60-135 MeV/c2 were set and are an order of magnitude improvement over previous results.",
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