The subatomic particle can either be a composite particle such as a proton, neutron, or meson or an elementary particle such as an electron, photon, or muon. The subatomic particle that has a ...

Baryons are subatomic particles made up of an odd number of quarks. Protons and neutrons found at the center of atoms are a ...

Particle physics describes the universe at the smallest scale. This includes subatomic particles, like protons and neutrons, as well as elementary particles, like quarks and electrons, which make ...

Of all the subatomic particles that have any mass at all, the neutrino is the lightest by far. In comparison, the electron, itself a quantum featherweight, has a mass that is at least 500,000 ...

The newly announced particles are known as baryons, and are six times as massive as protons. Like protons, baryons are made up of three strongly-bound elementary particles called quarks, which are ...

Though atomic nuclei are often depicted as static clusters of protons and neutrons (nucleons), the particles are actually ...

Scientists can determine the mass of subatomic particles that are built from quarks by looking at the particles' energy and momentum in four-dimensional spacetime. One of the quantities that ...

The first subatomic particle to be identified was the electron, in 1898. Ten years later, the British physicist Ernest Rutherford discovered that atoms have a very dense nucleus that contains protons.

Hydrogen is a special element because its atoms only contain two particles: an electron and a proton. Other elements have atoms with multiples of each and also have neutral particles called neutrons.

Hydrogen is a special element because its atoms only contain two particles: an electron and a proton. Other elements have atoms with multiples of each and also have neutral particles called neutrons.

The LHC is a 17-mile long underground “racetrack” that accelerates two opposing beams of particles to speeds of 99.9999 percent the speed of light. The particles race around the LHC on a crash ...