Symmetry Magazine
Symmetry Magazine: Explain It in 60 Seconds: Z Boson
The Z boson, described here, is important in the study of electroweak force. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different concepts in particle physics.
Other
Fermi National Accelerator Lab: Discovery of Top Quark
This article announces the discovery of the top quark and its significance in particle physics.
CK-12 Foundation
Ck 12: Weak Nuclear Force and the Standard Model
[Free Registration/Login may be required to access all resource tools.] Describes the development of the model of particle physics called the Standard Model.
Other
Lbnl: Particle Adventure Electroweak
A brief introduction to the electroweak theory, which combines the electromagnetic and weak interactions into a single theory.