Measurement of muon spin relaxation time in scintillating materials

Suguru Shimizu, Keito Horie, Kei Kamada, Atsushi Kobayahsi, Mototsugu Mihara

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A new experimental method to search for T-violating transverse muon polarization (PT) in the K+→ πμ+ν decay has been proposed. In this new experiment, the measurements of the μ+ momentum vector, the π momentum vector, and the μ+ polarization will be performed by the same electro-magnetic calorimeter. One of main issues is the choice of a scintillation material which can preserve the μ+ spin polarization for several μ+ lifetimes. A test experiment to measure the μ+ polarization in various scintillating crystals was performed at J-PARC Material and Life Science Facility (MLF). We concluded that the μ+ polarization in CeF3 is high enough to perform the new T-violation experiment.

Original languageEnglish
Article number10
JournalHyperfine Interactions
Issue number1
Publication statusPublished - 2022 Dec


  • CeF scintillator
  • Kaon decay
  • T-violation
  • μ spin preservation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry


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