Constraints on short-lived axions from the decay π+→e+e-e+ν

Lawrence Krauss, Mark B. Wise

Research output: Contribution to journalArticle

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Using chiral lagrangian techniques an expected branching ratio of 3×10-6 (mu/md)(ma/1.8 MeV)2 is calculated for the decay mode π+ → ae+ν, where a is a recently proposed short-lived axion variant, and thus earlier estimates of this rate are corrected. A recent measurement limits the decay π+ → e+e-e+ ν at the 10-10 level, which clearly rules out such an axion.

Original languageEnglish (US)
Pages (from-to)483-485
Number of pages3
JournalPhysics Letters B
Issue number3-4
Publication statusPublished - Aug 28 1986
Externally publishedYes


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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