The Standard Model

Problems

practice

  1. How many confirmed elementary particles are there in the standard model?
  2. Write something.
  3. Write something.
  4. Write something.

conceptual

  1. A tau lepton decays into an electron, an electron antineutrino, and a tau neutrino.
    1. Write out this reaction in symbolic form.
    2. Show that charge is conserved in this reaction.
  2. What is the total number of quarks in a helium nucleus consisting of 2 protons and 2 neutrons?
  3. The most common isotope of lithium is 73Li. How many of each of the following items are found in one of these atoms?
    1. bonbons
    2. electrons
    3. leptons
    1. morons
    2. neutrons
    3. protons
    1. down quarks
    2. strange quarks
    3. up quarks
    1. central parks
    2. plastic sporks
    3. judge borks

combinatorics

  1. Combinatorics and Quarks
    1. How many unique mesons can be made from just the up and down quarks? List the combinations and state their net charges.
    2. How many unique baryons can be made from just the up and down quarks? List the combinations and state their net charges.

The Physics Hypertextbook

  • No condition is permanent.