Which of the following particles have integral spin?

Bosons. Bosons are one of the two fundamental particles having integral spinclasses of particles, the other being fermions. Bosons are characterized by Bose–Einstein statistics and all have integer spins. Bosons may be either elementary, like photons and gluons, or composite, like mesons.

What are the elementary particles with half spin?

Many families and sub-families of elementary particles exist. Elementary particles are classified according to their spin. Fermions have half-integer spin while bosons have integer spin.

Why do fermions have half-integer spin?

In particle physics, a fermion is a particle that follows Fermi–Dirac statistics and generally has half odd integer spin: spin 1/2, spin 3/2, etc. These particles obey the Pauli exclusion principle. Some fermions are elementary particles, such as the electrons, and some are composite particles, such as the protons.

What is a half integer spin?

Spin-statistics theorem. The spin-statistics theorem states (1) that particles with half-integer spin (fermions) obey Fermi – Dirac statistics and the Pauli Exclusion Principle , and (2) that particles with integer spin (bosons) obey Bose–Einstein statistics, occupy “symmetric states”, and thus can share quantum states.

Why do particles spin?

Most cosmic objects such as stars, planets and galaxies have angular momentum. They spin about an axis based on the center of mass. The elementary particles that make them up – the electrons and quarks of matter – also possess angular momentum called intrinsic spin, but it is much different in nature.

What is a half spin?

What half-integer spin means, as in what is it. Spin is a quantum number, and it takes half-integer or integer values. A fermion (half-integer spin particle) obeys the Pauli exclusion principle and so its total wavefunction has to be antisymmetric (it also obeys Fermi-Dirac statistics).

What is integral spin?

The spin of particles is connected with the nature of the statistics that the particles obey. As Pauli showed in 1940, it follows from quantum field theory that particles with integral spin are bosons (that is, they obey Bose-Einstein statistics) and particles with half-integral spin are fermions (that is, they obey Fermi – Dirac statistics).