What makes a particle fundamental and can they decay?

[pallidin]

Perhaps this question has been addressed before, but, allow me to ask:

What consitutes the classification of a "fundamental" particle?
Does a fundamental particle have ANY half-life? Seems it would not.
Is a fundamental particle completely impervious to destruction?

 

[arivero]

Fundamental fermions do not decay, but "transform" one on another.

 

[elas]

arivero

can you give a specific reference please

 

[mathman]

http://pdg.lbl.gov/

The above site lists all the fundamental particles and their properties.