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Conservation of Isospin

  1. Sep 10, 2012 #1
    1. The problem statement, all variables and given/known data
    Hey I just want to clarify something. In particle physics, isospin is a flavor quantum number. Is it isospin or the z component of isospin which is conserved in particle interactions

    2. Relevant equations

    electron neutrino + proton -> electron pion+ + proton

    3. The attempt at a solution

    from what I can tell isospin is not conserved while the z component of isospin is?
    (also I realise from a decay point of view this violates conservation of energy I just wanted an example to demonstrate my point)

    Thanks
     
  2. jcsd
  3. Sep 11, 2012 #2
    Isospin is not conserved under weak interaction.
     
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