HADRONS (COMPOSITE FERMIONS)

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-   subatomic composite  fermions contain an odd number of quarks (mostly 3)

-   the force carrier particle of the strong interaction between the fermions is the

    gluon

-   the particles are called baryons if they have at least 3 quarks

-   subatomic composite bosons containing only 2 quarks are called mesons

-   the force carrier particle of the strong interaction  is the  gluon

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DECAY

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Hadrons are eigenstates of the strong force.

Hadrons will decay via the strong interaction to lighter mass states if energetically feasible (i.e. mass of parent > mass of daughters). And, angular momentum and parity must be conserved in strong decays.

 

Examples:

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Hadrons can also decay via the electromagnetic interaction

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Examples :

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