Gauge Bosons

They are the particles responsible for forces between other particles. The known force carrier bosons all have spin = 1 and are therefore known as vector bosons.

The hypothetical Gravitons have spin = 2 and is a tensor boson. But it is not known whether it is a gauge boson as well.

There are four types of gauge bosons:

• Photons (they are the EM )
• W Bosons
• Z Bosons
• Gluons