The new measurement from LHCb has found differences between baryons and antibaryons, which are made of three quarks and three antiquarks respectively. Significantly, baryons make up most of the known ...

Strange quarks and down quarks can both decay into up quarks, while up quarks (the lightest) cannot decay. All told, there are nine possibilities for quark decays through the weak interaction.

There are six kinds, or "flavors," of quarks: up, down, top, bottom, strange and charm. A neutron is composed of two down quarks and one up quark.

Now here’s where the symmetry jumps in. According to a principle called charge symmetry, an up quark in a proton should behave the same way as a down quark in a neutron, once you flip the charge.

Moments of proton GPDs from the OPE of nonlocal quark bilinears up to NNLO. Physical Review D, 2023; 108 (1) DOI: 10.1103/PhysRevD.108.014507 ...

Quark stars mimic their more familiar cousins the neutron stars, but they’re oddballs. Astrophysicists know how to make a neutron star.

Only the light flavors are stable—they constitute the ordinary matter our world is made of. (Two up quarks and a down quark make a proton, and one up quark and two down quarks make a neutron.) ...