Measurement of muon spin relaxation time in scintillating materials

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

doi:10.1007/s10751-021-01790-y

Measurement of muon spin relaxation time in scintillating materials

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

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A new experimental method to search for T-violating transverse muon polarization (P_T) 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 language	English
Article number	10
Journal	Hyperfine Interactions
Volume	243
Issue number	1
DOIs	https://doi.org/10.1007/s10751-021-01790-y
Publication status	Published - 2022 Dec

Keywords

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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10.1007/s10751-021-01790-y

Cite this

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title = "Measurement of muon spin relaxation time in scintillating materials",

abstract = "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.",

keywords = "CeF scintillator, Kaon decay, T-violation, μ spin preservation",

author = "Suguru Shimizu and Keito Horie and Kei Kamada and Atsushi Kobayahsi and Mototsugu Mihara",

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doi = "10.1007/s10751-021-01790-y",

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T1 - Measurement of muon spin relaxation time in scintillating materials

AU - Shimizu, Suguru

AU - Horie, Keito

AU - Kamada, Kei

AU - Kobayahsi, Atsushi

AU - Mihara, Mototsugu

PY - 2022/12

Y1 - 2022/12

N2 - 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.

AB - 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.

KW - CeF scintillator

KW - Kaon decay

KW - T-violation

KW - μ spin preservation

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Measurement of muon spin relaxation time in scintillating materials

Abstract

Keywords

ASJC Scopus subject areas

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