Glossary
The Mediators of Interactions

The "four forces" and the particles thought to mediate the interactions.
Interaction Mediator Notes
Gravity graviton ?
Mass zero (?)
Range infinity (?)
Weak Interactions Intermediate Vector Bosons
W+, W-, Z0
Mass 80+ GeV
Range <10-17m
Electromagnetic Photon
Mass zero
Range infinity
Strong Interactions Gluons
pion + ...
Mass 140+ Mev
Range <10-15m

See also Glossary: Relative Strengths of the "Forces"
Great WWW Links: