Quarks and Leptons

Question 1

What is teh difference between hadrons and leptons?

Answer 1

• leptons
  
  • interact through weak interaction, gravitationsal interaction
  • and through electromagnetic interaction (if charged)
  • do not interact through strong interaction
• hardons
  
  • can interact through all 4 fundamental interactions
  • interact through strong interaction
  • and the electro magnetic interaction if charged
  • tend to interact through weaj ubteractuib

Question 2

What is the exception in hadrons?

Answer 2

• proton is the only stable hadron
• does not tend to interact through the weak interaction

Question 3

What is the equation for the total energy of products?

Answer 3

• rest energy + kinetic energy

Question 4

What are the two groups of hardons?

Answer 4

• baryons
  
  • protons and all other hadrons that decay into protons either directly or indirectly
  • 3 quarks
• mesons
  
  • hadrons that do not include protons and their decay products
  • kaons and pions are not hadrons

Question 5

What are hadrons composed of?

Answer 5

• smaller particles called quarks and antiquarks