HADES searches for dark matter: Astrophysicists cross 'Dark Photon' off the list in top position

Although Dark Energy and Dark Matter appear to constitute over 95 percent of the universe, nobody knows of which particles they are made up. Astrophysicists now crossed one potential Dark Matter candidate -- the Dark Photon or U boson -- off the list in top position. This is the result of recent HADES experiments, where researchers from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) and from 17 other European institutes try to pin down the nature of Dark Matter. These negative results -- recently published in Physics Letters B -- could even lead to challenges of the Standard Model of particle physics.