Novel search for heavy ν mixing from the β+ decay of 38mK confined in an atom trap

  • M. Trinczek
  • , A. Gorelov
  • , D. Melconian
  • , W. P. Alford
  • , D. Asgeirsson
  • , D. Ashery
  • , J. A. Behr
  • , P. G. Bricault
  • , J. M. D'Auria
  • , J. Deutsch
  • , J. Dilling
  • , M. Dombsky
  • , P. Dubé
  • , S. Eaton
  • , J. Fingler
  • , U. Giesen
  • , S. Gu
  • , O. Häusser
  • , K. P. Jackson
  • , B. Lee
  • J. H. Schmid, T. J. Stocki, T. B. Swanson, W. Wong

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

A magneto-optical trap and the new technique of full neutrino momentum reconstruction were used to account for massive neutrino admixtures in nuclear β decay. It was possible to set the best direct limits on heavy vx admixtures into ve from mvx=0.7-3.6 MeV and the best model-independent direct limits from 2.9-3.6 MeV.

Original languageEnglish
Pages (from-to)012501/1-012501/4
JournalPhysical Review Letters
Volume90
Issue number1
StatePublished - Jan 10 2003

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