A new experimental method to search for T-violation using a sequential CeF3 scintillating calorimeter

S. Shimizu, K. Horie, Y. Igarashi, H. Ito, K. Kamada, S. Kimura, A. Kobayashi, M. Mihara, A. Yamaji, A. Yoshikawa

Research output: Contribution to journalArticlepeer-review

Abstract

A new experimental method to search for T-violating transverse muon polarization (PT) in the K+→π0μ+ν (Kμ3) decay is proposed. In this new experiment, the measurements of the μ+ momentum vector, the π0 momentum vector, and the μ+ polarization will be performed by the same electro-magnetic calorimeter. One of key 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 residual μ+ polarization in a CeF3 scintillating crystal was performed at J-PARC Material and Life Science Facility (MLF). We concluded that the residual μ+ polarization in CeF3 is high enough to perform the new T-violation experiment.

Keywords

  • Kaon decay
  • Muon spin polarization
  • Muon spin preservation in scintillating materials

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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