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Invariant pT

  1. Aug 20, 2013 #1
    What's the definition of invariant pT in a 2->2 process?

    I know how to calculate the invariant mass in this case, but I am not sure about pT.
  2. jcsd
  3. Aug 20, 2013 #2


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    Staff: Mentor

    I guess pT means transverse momentum here - the two momentum components perpendicular to some axis (the beam axis in collider experiments). The whole 4-momentum of the system is conserved, conserved energy is just one of those 4 components.
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