12 agosto 2015
In a stringent test of a fundamental property of the standard model of particle physics, known as CPT symmetry, researchers have made the most precise measurements so far of the charge-to-mass ratio of protons and their antimatter counterparts, antiprotons. The work was carried out using CERN’s Antiproton Decelerator, a device that provides low-energy antiprotons for antimatter studies.
http://www.sciencedaily.com/releases/2015/08/150812134249.htm
