The ATLAS and CMS experiments have observed a process 4,000 times rarer than the production of Higgs bosons. The ATLAS and CMS experiments have successfully detected the production of a quartet of top ...

In collisions between protons at the Large Hadron Collider (LHC), pairs of top quarks—the heaviest known elementary particles—are frequently produced along with other heavy quarks, including bottom ...

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 ...

An experiment more than 10 years in the making has delivered its first glimpse of the hurricane of particles whirring inside subatomic particles called neutrons, laying the groundwork to solve a ...

Deep in the heart of the matter, some numbers don't add up. For example, while protons and neutrons are made of quarks, nature's fundamental building blocks bound together by gluons, their masses are ...

CHAMPAIGN, Ill. — An international team of nuclear physicists has determined that particles called strange quarks do, indeed, contribute to the ordinary properties of the proton. Quarks are subatomic ...

Get unlimited access to ad-free articles and exclusive content. An experiment that offers a peek inside the behavior of subatomic particles called quarks could help answer questions about why the ...