How the minuscule can contribute to the big picture: the neutron electric dipole moment project at TRIUMF

Abstract

A permanent electric dipole moment (EDM) of a fundamental particle violates both parity (P) and time (T) reversal symmetry and combined charge and parity (CP) reversal symmetry if the combined reversal of charge, parity \textit{and} time (CPT) is preserved. It is a very promising place to search for physics beyond the Standard Model. Ultracold neutrons (UCN) are the ideal tool to study the neutron electric dipole moment since they can be observed for hundreds of seconds. This article summarizes the current searches for the neutron EDM using UCN and introduces the project to measure the neutron electric dipole moment at TRIUMF using its unique accelerator driven spallation neutron and liquid helium UCN source. The aim is to reach a sensitivity for the neutron EDM of around $10^{-27}e\cdot$cm.

12 pages, 6 figures, MENU 2016 Conference, Kyoto, Japan

References in corpus (5)

• Improved limit on the permanent electric dipole moment of 199Hg
• A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron
• A magnetically shielded room with ultra low residual field and gradient
• Constraining interactions mediated by axion-like particles with ultracold neutrons
• A measurement of the neutron to 199Hg magnetic moment ratio

Cited by in corpus (9)

• The design of the n2EDM experiment
• Two-Higgs-Doublet Model with Soft CP-violation Confronting Electric Dipole Moments and Colliders
• Aligned CP-violating Higgs sector canceling the electric dipole moment
• Magnetic field uniformity in neutron electric dipole moment experiments
• Baryon Asymmetric Universe from Spontaneous CP Violation
• A next-generation inverse-geometry spallation-driven ultracold neutron source
• A $\nu$ Solution to the Strong CP Problem
• Is the $\bar{\theta }$ parameter of QCD constant?
• Monte Carlo simulations for the optimization and data analysis of experiments with ultracold neutrons