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    maryamkingy Posts: 1, Reputation: 1
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    Nov 16, 2013, 11:09 AM
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    I've calculated the "scattering amplitude" for box diagram in scattering of quark-quark.
    In my result there is an infrared divergence due to gluon mass, and I want to know whether there is any way I can get rid of this divergency.
    And I emphasize that I want to eliminate this divergence in scattering "amplitude" not cross section.
    Thanks for your help

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