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# Baryon and lepton number watch

1. I've been looking on google and my A level physics textbooks but I can't find a clear answer for what I am looking for, can anyone explain to me what the baryon and lepton number of a proton, neutron, beta +, beta -, neutrino and antineutrino are?
2. First of all do you know what a baryon and what a lepton is?
3. (Original post by spidle)
First of all do you know what a baryon and what a lepton is?
Sort of but not 100% sure
4. Baryons are made up of 3 quarks whereas leptons are not made up of any quarks. Can you determine the baryon and lepton number of each of those particles now?
5. (Original post by spidle)
Baryons are made up of 3 quarks whereas leptons are not made up of any quarks. Can you determine the baryon and lepton number of each of those particles now?
Ok thankyou that helps a lot, but what about antiparticles?
6. (Original post by Conam)
Ok thankyou that helps a lot, but what about antiparticles?
are there any negative baryon or lepton numbers?
7. (Original post by Conam)
are there any negative baryon or lepton numbers?
Yes, antiparticles such as a positron will have a -1 lepton number. Think of them as complete opposites.

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