a problem about particle physics

kolndom
Posts: 19
Joined: Tue Oct 25, 2005 11:29 am

a problem about particle physics

Postby kolndom » Wed Oct 26, 2005 5:34 am

Except for mass, the properties of the muon most closely resemble the properties of the
(A) electron
(B) graviton
(C) photon
(D) pion
(E) proton

Is it because that electron and muon are all elementary particles, while others are not?

Thank u in advance :)

danty
Posts: 19
Joined: Fri Sep 30, 2005 6:40 pm

Postby danty » Wed Oct 26, 2005 9:38 am

You should have a look at an elementary particle physics book. Just learn what particles are enlisted in every category(fermions-bosons)- (quarks,leptons,hadrons) ,some basic properties of them (such as their spin), how they interact (strong,weak,E/M interactions) , their specific quantum number (lepton number, baryon number, and the conservation principles ( such us the consarvation of strangeness).

The electron and muon are both leptons.They have exactly the same properties exept from mass. Sometimes the muon is called "a heavy electron".

The graviton and photon are bosons, and they are the carriers of gravitational and E/M interactions respectively. THe protons and pions are composite particles ( baryons and mesons respectively).Baryons consit of 3 quarks, while mesons consist of 2 quarks and 1 anti-quark.




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