Classification of particles

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HADRONS

feel the strong nuclear interaction

are made up of quarks

LEPTONS

do not feel the strong nuclear interaction

they are fundamental particles

MESONS

quark composition is a quark and an antiquark pair

BARYONS

made up pf three quarks

proton is the only stable baryon, all others decay into a proton.

Particles are split into two main groups:

hadrons are further split up into two groups:

⇘

⇘

⇙

⇙

examples are:

electron

neutrino

muon

examples are:

proton

neutron

sigma particle

examples are:

pion

K meson

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