Nearly every object we interact with in our lives has a mass, but where does this mass come from? Modern physics says matter ...

When fundamental particles are heavier or lighter than expected, physicists' understanding of the universe can tip into the ...

Nuclear physicists may have finally pinpointed where in the proton a large fraction of its mass resides. A recent experiment has revealed the radius of the proton's mass that is generated by the ...

Physicists working at Germany’s GSI Helmholtz Centre have found the first experimental hints that an unusually heavy subatomic particle, the eta-prime meson, can bind to an atomic nucleus. If ...

Decades of weird experimental results appeared to support the existence of the sterile neutrino, a hypothetical particle that ...

The CMS and ATLAS experiments at the Large Hadron Collider joined forces to make the most precise measurement of the mass of the Higgs boson yet. On the dawn of the Large Hadron Collider restart, the ...

An experiment being built at the Gran Sasso laboratory in Italy could provide valuable insights into neutrino physics and the nature of dark matter. Ettore Fiorini of Milan University and colleagues ...

Nuclear physicists may have finally pinpointed where in the proton a large fraction of its mass resides. A recent experiment carried out at the U.S. Department of Energy's Thomas Jefferson National ...