New Limit on Muon and Electron Lepton Number Violation fromKL0→μ±e∓Decay

1998/11/24 by David A. Ambrose, D. Ambrose, C. Arroyo +26 · 2 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.1103/physrevlett.81.5734

published as Phys.Rev.Lett.81:5734-5737,1998 · 6 pages, 4 figures

arxiv created 1998/11/24 · openalex publication_date 1998/12/28 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The most sensitive experiment to date to search for the muon and electron lepton number violating decay K_L⁰\ensuremath→\ensuremathμ^\ifmmode±\else\textpm\fie^\ensuremath∓ has detected no events consistent with this process. Based on this result, the 90% confidence level upper limit on the branching fraction is B(K_L⁰\ensuremath→\ensuremathμ^\ifmmode±\else\textpm\fie^\ensuremath∓)<4.7\ifmmode×\else\texttimes\fi10^\ensuremath-12.

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• A straw drift chamber spectrometer for studies of rare kaon decays
• Karol Lang [wikipedia]