The search for the neutron electric dipole moment at PSI

Pignol, Guillaume; Schmidt-Wellenburg, Philipp

doi:10.21468/SciPostPhysProc.5.027

SciPost Physics Proceedings

The search for the neutron electric dipole moment at PSI

Guillaume Pignol, Philipp Schmidt-Wellenburg

SciPost Phys. Proc. 5, 027 (2021) · published 6 September 2021

doi: 10.21468/SciPostPhysProc.5.027
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Review of Particle Physics at PSI

Abstract

The existence of a nonzero permanent electric dipole moment (EDM) of the neutron would reveal a new source of CP violation and shed light on the origin of the matter--antimatter asymmetry of the Universe. The sensitivity of current experiments using stored ultracold neutrons (UCN) probes new physics beyond the TeV scale. Using the UCN source at the Paul Scherrer Institut, the nEDM collaboration has performed the most sensitive measurement of the neutron EDM to date, still compatible with zero ($|d_n|<1.8\times 10^{-26} \, e {\rm cm}$, C.L.90%). A new experiment designed to improve the sensitivity by an order of magnitude, n2EDM, is currently in construction.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.5.027
TI  - The search for the neutron electric dipole moment at PSI
PY  - 2021/09/06
UR  - https://www.scipost.org/SciPostPhysProc.5.027
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 5
SP  - 027
A1  - Pignol, Guillaume
AU  - Schmidt-Wellenburg, Philipp
AB  - The existence of a nonzero permanent electric dipole moment (EDM) of the neutron would reveal a new source of CP violation and shed light on the origin of the matter--antimatter asymmetry of the Universe. The sensitivity of current experiments using stored ultracold neutrons (UCN) probes new physics beyond the TeV scale. Using the UCN source at the Paul Scherrer Institut, the nEDM collaboration has performed the most sensitive measurement of the neutron EDM to date, still compatible with zero ($|d_n|<1.8\times 10^{-26} \, e {\rm cm}$, C.L.90%). A new experiment designed to improve the sensitivity by an order of magnitude, n2EDM, is currently in construction.
ER  -

@Article{10.21468/SciPostPhysProc.5.027,
	title={{The search for the neutron electric dipole moment at PSI}},
	author={Guillaume Pignol and Philipp Schmidt-Wellenburg},
	journal={SciPost Phys. Proc.},
	pages={027},
	year={2021},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.5.027},
	url={https://scipost.org/10.21468/SciPostPhysProc.5.027},
}

Cited by 3

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¹ Guillaume Pignol,
² Philipp Schmidt-Wellenburg