Neutron Electric Dipole Moment (nEDM) Collaboration tagged posts

This is Michal Rawlik of ETH Zürich and Nicholas Ayres of Sussex University. Credit: University of Sussex

Scientists at the University of Sussex have disproved the existence of a specific type of axion – an important candidate ‘dark matter’ particle – across a wide range of its possible masses. The data were collected by an international consortium, the Neutron Electric Dipole Moment (nEDM) Collaboration, whose experiment is based at the Paul Scherrer Institut in Switzerland. Data were taken there and, earlier, at the Institut Laue-Langevin in Grenoble. Professor Philip Harris said: “Experts largely agree that a major portion of the mass in the universe consists of ‘dark matter’. Its nature, however, remains completely obscure...