New Limit on theT-Violating Transverse Muon Polarization inK+→π0μ+νDecays

2004/08/12 by M. Abe, M. Aliev, V. V. Anisimovsky +37 · 1 citation
Mathematics · Physics and Astronomy · #Algorithm #Computer science #Limit (mathematics) #Mathematical analysis #Mathematics #Muon #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1103/physrevlett.93.131601

published as Phys.Rev.Lett.93:131601,2004 · 5 pages, 4 figures

arxiv created 2004/08/12 · openalex publication_date 2004/09/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

A search for T-violating transverse muon polarization (P_T) in the K⁺\ensuremath→\ensuremathπ⁰\ensuremathμ⁺\ensuremathν decay was performed using kaon decays at rest. A new improved value P_T=\ensuremath-0.0017\ifmmode±\else\textpm\fi0.0023(stat)\ifmmode±\else\textpm\fi0.0011(syst) was obtained giving an upper limit |P_T|<0.0050. The T-violation parameter was determined to be Im\ensuremathξ=\ensuremath-0.0053\ifmmode±\else\textpm\fi0.0071(stat)\ifmmode±\else\textpm\fi0.0036(syst) giving an upper limit |Im\ensuremathξ|<0.016.

Citations

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

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• Tests of the standard electroweak model in nuclear beta decay