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Homework Help: Question form Peskin Schroeder

  1. Aug 6, 2007 #1
    Dear PF,

    I have one question form Peskin Schroeder....could you pls help me
    It is very simple question...
    Since I dont know how to write formulas here I put my question in attachment.

    Thank you very much.

    Attached Files:

  2. jcsd
  3. Aug 12, 2007 #2


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    Science Advisor
    Homework Helper

    Well just use the fact that [itex]pk=m\omega [/itex] and [itex] pk'=m\omega' [/itex] plus the Compton relation

    [tex] \frac{1}{\omega}-\frac{1}{\omega'}=\frac{\cos\theta - 1}{m} [/tex]

    And you'll get that -sin^2 after using a bit of trigonometry.
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