2009

The Factorisation of the t-channel Pole in Quark-Gluon Scattering

Andersen, Jeppe R., Smillie, Jennifer M.

Understand

By exploring the scattering of specific helicity states in quark-gluon scattering at tree level we show explicitly that the t-channel pole can be described exactly as a contraction of two local currents.

  • Furthermore, we demonstrate that out of eight non-zero helicity possibilities, only two suppressed channels have contributions that are not pure, factorised t-channel poles.
  • We thereby extract a gauge-invariant definition for the t-channel current generated by the scattering of a gluon.
  • This offers a slight improvement in the description of gluon scattering in the framework of arXiv:0908.2786 for the prediction of n-jet rates at hadron colliders.

Built on

  • V. S. Fadin, E. A. Kuraev, and L. N. Lipatov, On the Pomeranchuk singularity in asymptotically free theories

    1975

    Earlier work this paper cites.

  • E. A. Kuraev, L. N. Lipatov, and V. S. Fadin, Multi - Reggeon processes in the Yang-Mills theory

    1976

    Earlier work this paper cites.

  • E. A. Kuraev, L. N. Lipatov, and V. S. Fadin, The Pomeranchuk singularity in nonabelian gauge theories

    1977

    Earlier work this paper cites.

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