Particle Classification Flashcards
1
Q
What is all matter split into?
A
Hadrons and Leptons.
2
Q
What are hadrons?
A
Particles that feel the strong force, made up of quarks.
3
Q
What are hadrons split into to?
A
Baryons and Mesons
4
Q
What are baryons?
A
Subatomic particles that have a mass equal to or greater than that of a proton. They are made up of 3 quarks and their charge must be an integer.
5
Q
What conservation laws do baryons follow?
A
The total number of baryons must remain constant. If any baryons are created, an equal number of anti-baryons must be created too.
6
Q
What are some examples of baryons?
A
Protons = uud = +1 charge, +1 baryon number, 0 strangeness neutrons = udd = 0 charge, +1 baryon number, 0 strangeness
7
Q
What are mesons?
A
Subatomic particles made up of a quark and an anti-quark.
8
Q
What conservation laws do mesons follow?
A
Conservation of energy.
9
Q
What are some examples of mesons?
A
Pions = no strangeness Kaons = must contain at least 1 s or s-, kaons decay and become pions
10
Q
What are some examples of leptons?
A
Electrons = lepton number +1 Muoms = lepton number +1 Neutrinos = no charge, lepton number +1
