Transcript CRussellTalk1Quarks.ppt

Quarks
Types
•
•
•
•
•
•
Up
Down
Charmed
Strange
Top
Bottom
Formations
Hadrons
Baryons
Eg: Protons
Neutrons
Mesons
Eg: Kaons
Pions
Up
Down
2/3+ Electric Charge
Lightest
1/3- Electric Charge
2nd Lightest
Charm
Strange
2/3+ Electric Charge
3rd Heaviest
1/3- Electric Charge
3rd Lightest
Top
Bottom
2/3+ Electric Charge
Heaviest
1/3- Electric Charge
2rd Heaviest
• Up/Down quarks make up
the majority of matter we see
everyday.
• Others form highly unstable
particles due to their
relatively immense weight.
• Quarks have “color charge”
in addition to electric charge
which determines strong
force attraction.
Hadrons
Baryons
Mesons
All hadrons with 3 quarks.
Contain one quark and one antiquark.
•
•
Protons: UUD
Neutrons: UDD
•
Pions: UD
Kaons gave the name to the
strange quark; they have an
unusually long life for mesons
and were the first particle found
to contain the strange quark.