First collisions at an upgrade to one of Japan’s premier particle-physics experiments are set to begin in April 2018. Following six years of work, the SuperKEKB accelerator will start smashing its ...

Ready to go: the Belle II experiment will run on Japan's SuperKEKB accelerator. (Courtesy: KEK) The first electron–positron collisions occurred at an upgrade to one of Japan’s premier particle-physics ...

Superconducting magnets inside the tunnel of the Relativistic Heavy Ion Collider (RHIC), a U.S. Department of Energy Office of Science user facility for nuclear research at Brookhaven National ...

This story was updated at 6:04 p.m. ET. In a development physicists are calling "huge," "tantalizing" and "unexpected," researchers have measured a signal that could herald a new kind of particle or ...