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Homework Help: Ee ->e+e+ scattering

  1. Dec 10, 2012 #1
    ee --->e+e+ scattering

    1. The problem statement, all variables and given/known data
    I have come across the following scattering : e-e- ---->e+e+

    Does anyone know the name of this scattering ?
    Do you know of any book describing simililar lepton scatterings?

    Thank you

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Dec 10, 2012 #2
    Re: ee --->e+e+ scattering

    can you see charge conservation here?
  4. Dec 10, 2012 #3
    Re: ee --->e+e+ scattering

    No charge conservation
    Do you think this might be a typo?
    I will completely honest with you ,

    this is a question from a homework :(look the attachement)

    if there is a typo then should the process e-e+ --- > e-e+ be considered an exotic scattering?

    Attached Files:

    • X.PNG
      File size:
      11.8 KB
  5. Dec 10, 2012 #4
    Re: ee --->e+e+ scattering

    oh no,from which book you have gotten that?
    e-e+ --- > e-e+,this specially is related to bhabha scattering.this does hold.By the way,what is exotic here?
  6. Dec 10, 2012 #5
    Re: ee --->e+e+ scattering

    From my minimal knowledge on Feynaman rules i know that a feynman diagram has to conserve charge along a vertex.

    If it is the e-e+ --- > e-e+ process shouldn't the question also clarify if it is spinless or not andrien ?
  7. Dec 10, 2012 #6
    Re: ee --->e+e+ scattering

    what do you mean by spinless.electron and positron can have it's spin along a certain chosen z axis in the same direction which is in fact a requirement of bhabha scattering!
  8. Dec 10, 2012 #7
    Re: ee --->e+e+ scattering

    well, i have just entered the field of particle physics ,and i don't know many things.

    Thanks for the replies
  9. Dec 10, 2012 #8
    Re: ee --->e+e+ scattering

    what was the name of book
  10. Dec 10, 2012 #9
    Re: ee --->e+e+ scattering

    The image i uploaded as i said , was taken from a homework assighnement.I don't know where he found it ,maybe a book came from an alternative universe through a wormhole,where the charge conservation law doesn't hold ,and so my teacher thought it was from our own universe.
  11. Dec 10, 2012 #10
    Re: ee --->e+e+ scattering

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