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Homework Help: Problem 6.2 in Peskin's QFT book

  1. Jan 7, 2010 #1
    1. The problem statement, all variables and given/known data
    In fact this is not homework, I'm self-studying QFT by reading Peskin's book, and I'm stuck with Problem 6.2.

    2. Relevant equations
    In part (e), I cannot get the factor (1+(1-x)2)/x in the cross section.

    3. The attempt at a solution
    Maybe I'd already been wrong in earlier parts, the result I got in part (b) is C~D~[tex]\sqrt{EE'}\theta[/tex],
    and the probability I got in part (c) is ~ [tex]\frac{1}{EE'\theta^2}[/tex]

    Generally I just do every problem on this book, but now I'm stuck and can't move on, please please help. Thank you.
    Last edited: Jan 7, 2010
  2. jcsd
  3. Jan 8, 2010 #2


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    It might help if you posted the original problem and what you've done on it so far.
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