A New Approach for Measuring the Muon Anomalous Magnetic Moment and Electric Dipole Moment - INSPIRE

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A New Approach for Measuring the Muon Anomalous Magnetic Moment and Electric Dipole Moment

M. Abe
(
- KEK, Tsukuba
)
,
S. Bae
(
- Seoul Natl. U. (main) and
- KIRAMS, Seoul
)
,
G. Beer
(
- U. Victoria (main)
)
,
G. Bunce
(
- NIST, Boulder
)
,
H. Choi
(
- Seoul Natl. U. (main) and
- KIRAMS, Seoul
)

Jan 10, 2019

24 pages

Published in:

PTEP 2019 (2019) 5, 053C02

Published: May 1, 2019

e-Print:

1901.03047 [physics.ins-det]

DOI:

10.1093/ptep/ptz030

View in:

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Abstract: (Oxford University Press)

This paper introduces a new approach to measure the muon magnetic moment anomaly |

a_{\mu} = (g-2)/2

| and the muon electric dipole moment (EDM) |

d_{\mu}

| at the J-PARC muon facility. The goal of our experiment is to measure |

a_{\mu}

| and |

d_{\mu}

| using an independent method with a factor of 10 lower muon momentum, and a factor of 20 smaller diameter storage-ring solenoid compared with previous and ongoing muon |

g-2

| experiments with unprecedented quality of the storage magnetic field. Additional significant differences from the present experimental method include a factor of 1000 smaller transverse emittance of the muon beam (reaccelerated thermal muon beam), its efficient vertical injection into the solenoid, and tracking each decay positron from muon decay to obtain its momentum vector. The precision goal for |

a_{\mu}

| is a statistical uncertainty of 450 parts per billion (ppb), similar to the present experimental uncertainty, and a systematic uncertainty less than 70 ppb. The goal for EDM is a sensitivity of |1.5\times 10^{-21}~e\cdot\mbox{cm}|⁠.

Note:

24 pages, 14 figures

C07 Particle properties
C31 Experiments using charged lepton beams
muon: magnetic moment
muon: beam
muon: electric moment
electric moment
muon: decay
magnetic moment: anomaly
solenoid
experimental methods

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Figures(16)

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