An analysis of electron-positron collision data has determined the spin and parity of a particle thought to consist of four quarks.
[Physics] Published Wed Aug 16, 2017
Photoemission spectroscopy has detected two different populations of spin-polarized electrons that are “hidden” within a layered, graphene-like material. [Physics] Published Wed Feb 22, 2017
A minimal extension to the standard model of particle physics involves six new particles. [Physics] Published Wed Feb 15, 2017
Scientists have discovered an exotic atom formed from two specific types of meson, which consist of only a quark and an anti-quark, instead of the three quarks found in constituents of normal matter.Mesons are unstable particles pro...
Hadrons, the particles made of quarks, are almost unanimously produced in the two or three quark varieties in particle colliders. However, in the last decade or so, a new frontier has opened up in subatomic physics. Four-quark parti...