RE: Towards a future 100-km-long particle collider at CERN

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Towards a future 100-km-long particle collider at CERN

in steemstem •  6 years ago 

Okay, Lagrangian... I have to study some basics first )

Is it only interaction particles (bosons) which are predicted to be massless or matter particles (fermions) as well?

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Both in this case. Only a specific class of fermions can be massive, called vector-like fermions (whose two chiralities behave the same), that can be massive. However, there is no such a vector-like fermion in the Standard Model.