Related Experiment Video
Updated: Jul 8, 2025

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Experimental perspectives on the matter-antimatter asymmetry puzzle: developments in electron EDM and [Formula: see
D Comparat1, C Malbrunot2,3, S Malbrunot-Ettenauer2,4
1Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS Paris Saclay, Université Paris-Saclay, Bâtiment 505, 91405 Orsay, France.
Abstract:
In the search for clues to the matter-antimatter puzzle, experiments with atoms or molecules play a particular role. These systems allow measurements with very high precision, as demonstrated by the unprecedented limits down to [Formula: see text] e cm on electron EDM using molecular ions, and relative measurements at the level of [Formula: see text] in spectroscopy of antihydrogen atoms. Building on these impressive measurements, new experimental directions offer potential for drastic improvements. We review here some of the new perspectives in those fields and their associated prospects for new physics searches. This article is part of the theme issue 'The particle-gravity frontier'.
Related Concept Videos
Thomson's e/m Experiment
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The...
The de Broglie Wavelength
The Uncertainty Principle
The Quantum-Mechanical Model of an Atom
Dual Nature of Electromagnetic (EM) Radiation
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
Magnetic Moment of an Electron

