High precision fundamental physics experiments using compact spin-transparent storage rings of low energy polarized electron beams

Riad Suleiman; Vasiliy S. Morozov; Yaroslav S. Derbenev

doi:10.1016/j.physletb.2023.138058

High precision fundamental physics experiments using compact spin-transparent storage rings of low energy polarized electron beams

Riad Suleiman, Vasiliy S. Morozov, Yaroslav S. Derbenev

Accelerator Physics

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

4 Scopus citations

Abstract

We present a new design of highly specialized small storage rings for low energy polarized electron beams. The new design is based on the transparent spin methodology that cancels the spin precession due to the magnetic dipole moment at any energy while allowing for spin precession induced by the fundamental physics of interest to accumulate. The buildup of the vertical component of beam polarization can be measured using standard Mott polarimetry that is optimal at low electron energy. Systematic effects are suppressed using counter-rotating bunched beams with various polarization orientations. These rings can be used to directly measure the permanent electric dipole moment of the electron, relevant to CP violation and matter-antimatter asymmetry in the universe, and to search for dark energy and ultra-light dark matter.

Original language	English
Article number	138058
Journal	Physics Letters B
Volume	843
DOIs	https://doi.org/10.1016/j.physletb.2023.138058
State	Published - Aug 10 2023

Funding

We appreciate very helpful discussions with M. Blaskiewicz, A. Hutton, Yu. N. Filatov, A. M. Kondratenko, M. A. Kondratenko, V. Lebedev, R. Li, M. Poelker, and T. Satogata. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract DE-AC05-06OR23177 . This manuscript has been authored in part by UT-Battelle, LLC , under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The publisher acknowledges the US government license to provide public access under the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). We appreciate very helpful discussions with M. Blaskiewicz, A. Hutton, Yu. N. Filatov, A. M. Kondratenko, M. A. Kondratenko, V. Lebedev, R. Li, M. Poelker, and T. Satogata. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract DE-AC05-06OR23177. This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The publisher acknowledges the US government license to provide public access under the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Keywords

CP violation
Dark matter and dark energy
Electron electric dipole moment
Polarized electron beam
Spin-transparent storage ring

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10.1016/j.physletb.2023.138058

Cite this

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title = "High precision fundamental physics experiments using compact spin-transparent storage rings of low energy polarized electron beams",

abstract = "We present a new design of highly specialized small storage rings for low energy polarized electron beams. The new design is based on the transparent spin methodology that cancels the spin precession due to the magnetic dipole moment at any energy while allowing for spin precession induced by the fundamental physics of interest to accumulate. The buildup of the vertical component of beam polarization can be measured using standard Mott polarimetry that is optimal at low electron energy. Systematic effects are suppressed using counter-rotating bunched beams with various polarization orientations. These rings can be used to directly measure the permanent electric dipole moment of the electron, relevant to CP violation and matter-antimatter asymmetry in the universe, and to search for dark energy and ultra-light dark matter.",

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author = "Riad Suleiman and Morozov, {Vasiliy S.} and Derbenev, {Yaroslav S.}",

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doi = "10.1016/j.physletb.2023.138058",

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T1 - High precision fundamental physics experiments using compact spin-transparent storage rings of low energy polarized electron beams

AU - Suleiman, Riad

AU - Morozov, Vasiliy S.

AU - Derbenev, Yaroslav S.

PY - 2023/8/10

Y1 - 2023/8/10

N2 - We present a new design of highly specialized small storage rings for low energy polarized electron beams. The new design is based on the transparent spin methodology that cancels the spin precession due to the magnetic dipole moment at any energy while allowing for spin precession induced by the fundamental physics of interest to accumulate. The buildup of the vertical component of beam polarization can be measured using standard Mott polarimetry that is optimal at low electron energy. Systematic effects are suppressed using counter-rotating bunched beams with various polarization orientations. These rings can be used to directly measure the permanent electric dipole moment of the electron, relevant to CP violation and matter-antimatter asymmetry in the universe, and to search for dark energy and ultra-light dark matter.

AB - We present a new design of highly specialized small storage rings for low energy polarized electron beams. The new design is based on the transparent spin methodology that cancels the spin precession due to the magnetic dipole moment at any energy while allowing for spin precession induced by the fundamental physics of interest to accumulate. The buildup of the vertical component of beam polarization can be measured using standard Mott polarimetry that is optimal at low electron energy. Systematic effects are suppressed using counter-rotating bunched beams with various polarization orientations. These rings can be used to directly measure the permanent electric dipole moment of the electron, relevant to CP violation and matter-antimatter asymmetry in the universe, and to search for dark energy and ultra-light dark matter.

KW - CP violation

KW - Dark matter and dark energy

KW - Electron electric dipole moment

KW - Polarized electron beam

KW - Spin-transparent storage ring

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High precision fundamental physics experiments using compact spin-transparent storage rings of low energy polarized electron beams

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