If real evidence of quarks is found, says Hasted, “elementary-particle physics will have taken the next great step forward. It’s so important to find quarks that it’s worth looking anywhere.

David Norman reviews The Physics of Birds and Birding: the Sounds, Colors and Movements of Birds, and Our Tools for Watching Them by Michael Hurben ...

Studying how quarks inside protons move in response to electric fields shows that protons seem to stretch more than theory says they should.

The atomic nucleus is made up of protons and neutrons, particles that exist through the interaction of quarks bonded by gluons. It would seem, therefore, that it should not be difficult to ...

Long-range quantum entanglement measured at last Martijn Mulders, a member of CERN’s CMS team who was not involved in the ATLAS research, calls it an “original and beautiful result”, adding that the ...

Theorists have calculated how quickly a melted soup of quarks and gluons—the building blocks of protons and neutrons—transfers its momentum to heavy quarks. The calculation will help explain ...

According to theoretical predictions, within a millionth of a second after the Big Bang, nucleons had not yet formed, and ...

Newly released observations of the top quark -- the heaviest of all known fundamental particles -- could topple the standard model of particle physics. Data from collisions at the Tevatron ...

Polarized proton containing spinning quarks and gluons (represented by right-handed and left-handed spirals). The negative Δg solutions (blue) are disfavored relative to the positive Δg ...

Pairs of top-antitop quarks produced in Tevatron collisions aren't behaving quite as expected, and the best explanation may be an exotic particle that we've not been looking for. Read the whole story ...

Physics at the smallest scales is a challenge of observation: Particles are often fleeting, and the forces that govern their behavior are nearly imperceptible. But now, by exploiting decades-old ...