Search results
Results from the WOW.Com Content Network
Spin (physics) Spin is an intrinsic form of angular momentum carried by elementary particles, and thus by composite particles such as hadrons, atomic nuclei, and atoms. [1][2]: 183 –184 Spin is quantized, and accurate models for the interaction with spin require relativistic quantum mechanics or quantum field theory.
Elementary particle. In particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. [1] The Standard Model presently recognizes seventeen distinct particles—twelve fermions and five bosons.
t. e. In quantum mechanics, spin is an intrinsic property of all elementary particles. All known fermions, the particles that constitute ordinary matter, have a spin of 1 2 . [1][2][3] The spin number describes how many symmetrical facets a particle has in one full rotation; a spin of 1 2 means that the particle must be rotated ...
Standard Model of Particle Physics. The diagram shows the elementary particles of the Standard Model (the Higgs boson, the three generations of quarks and leptons, and the gauge bosons), including their names, masses, spins, charges, chiralities, and interactions with the strong, weak and electromagnetic forces.
In theoretical physics, a Feynman diagram is a pictorial representation of the mathematical expressions describing the behavior and interaction of subatomic particles. The scheme is named after American physicist Richard Feynman, who introduced the diagrams in 1948. The interaction of subatomic particles can be complex and difficult to ...
In addition to spin, the electron has an intrinsic magnetic moment along its spin axis. [81] It is approximately equal to one Bohr magneton, [86] [d] which is a physical constant that is equal to 9.274 010 0657 (29) × 10 −24 J⋅T −1. [87] The orientation of the spin with respect to the momentum of the electron defines the property of ...
In particle physics, a lepton is an elementary particle of half-integer spin (spin 1 2 ) that does not undergo strong interactions. [1] Two main classes of leptons exist: charged leptons (also known as the electron -like leptons or muons), including the electron, muon, and tauon, and neutral leptons, better known as neutrinos.
The Higgs particle is a massive scalar elementary particle theorized by Peter Higgs in 1964, when he showed that Goldstone's 1962 theorem (generic continuous symmetry, which is spontaneously broken) provides a third polarisation of a massive vector field.