Classification Of Particles Flashcards
1
Q
K0
Note capital letters indicate a line above the quark
A
dS
2
Q
K+
A
uS
3
Q
Negative pion
A
dU
4
Q
Neutral pion
A
uU, dD, sS
5
Q
Positive pion
A
uD
6
Q
K-
A
sU
7
Q
K0 and a line above the K
A
sD
8
Q
What are the two groups of particles?
A
- Hadrons = interact through the strong interaction, decay through the weak interaction
- Leptons = interaction through the weak interaction, not through the strong interaction
9
Q
What are hadrons and leptons made out of?
A
Hadrons are made from quarks
Leptons are fundamental particles
10
Q
Name the two types of hadrons
A
Baryon = 3 quarks
Mesons = quark, antiquark composition
Note : all baryons decay into a proton and all mesons decay into a pion
11
Q
State 3 facts about strangeness and strange particles?
A
- Strange particles are created via the strong interaction but decay via the weak
- Strange particles are always produced in pairs
- Strangeness is conserved in the strong interaction but not the weak.
12
Q
Name 3 leptons
A
Electrons, muons and neutrinos
Note: the muon decays into an electron
13
Q
Through what interaction does quark character change?
A
Weak interaction via beta minus or beta plus decay.
