(1) Like quarks and leptons , the Higgs particle also derives its mass from coupling to the Higgs condensate.(2) Finally, the EM force acts on electrically charged particles: charged leptons (like electrons), and charged force carriers.(3) No observation of leptonic decays of D-mesons has yet been reported, owing to the smaller branching fraction.(4) These infinitesimal particles are usually grouped into four main categories: the mesons, the baryons, the leptons , and the photons (the most basic unit of electromagnetic radiation).(5) There are small subatomic particles called leptons .(6) Quarks and charged leptons also feel the electromagnetic force, and quarks feel the strong force.(7) This colour quantum number is additional to leptonic flavour which distinguishes neutrinos from charged leptons.
