Quarks and Leptons Flashcards
What is all matter and antimatter classified as?
Hadrons or Leptons
How can new particles such as kaons and pions be created?
In accelerators, where the kinetic energy of the protons used is converted into mass of the new particles
How do hadrons differ from Leptons?
Hadrons can interact through the strong force, leptons can not
What forces do hadrons interact through?
Strong and electromagnetic if charged
What forces do leptons interact through?
Weak and electromagnetic if charged
What force do hadrons decay through?
Weak force - apart from protons which are stable
What are hadrons classified as?
Baryons or mesons
What are Baryons?
Protons and other hadrons that decay into protons ( directly or indirectly)
What are mesons?
Hadrons that do not include protons in their decay products
True or False - Leptons can interact to form Hadrons
True
Why are leptons fundamental?
They can’t be broken down into smaller particles
What is conserved during a reaction?
Charge, Strangeness (only in a strong interaction), Baryon number, Lepton number, mass ( energy)
What are hadrons compose of?
Quarks and Antiquarks
What are the three main quarks?
Up - u
Down - d
Strange - s
What quarks do mesons contain?
A quark and an antiquark pair
