Rules of Parity and Charge Conjugation Parity

  1. I have two related questions to ask relating to statements found in introductory particle physics textbooks.

    The first is that the "Dirac equation predicts fermions/anti-fermions have opposite intrinsic parity".
    I have attempted to verify this by applying the parity transformation to free particle Dirac spinors using an explicit choice of representation. I find that it is true provided the particles are at rest but otherwise, they are not in a state of definite parity. This doesn't seem consistent with the quotation.

    The second statement is that "fermion-antifermion pairs with total orbital angular momentum number L and total spin S, have a parity factor (-1)^(L+S) when interchanged". There is some reference to a minus sign appearing upon the interchange of antifermion with fermion which I have not been able to justify. Could anyone show me a detailed explanation of this factor please?

    Thanks
     
  2. jcsd
  3. Bill_K

    Bill_K 4,159
    Science Advisor

    That's correct.
     
Know someone interested in this topic? Share a link to this question via email, Google+, Twitter, or Facebook

Have something to add?

0
Draft saved Draft deleted
Similar discussions for: Rules of Parity and Charge Conjugation Parity
Loading...