Colour structure in threshold resummation and squark-antisquark production at NLL

Details Colour structure in threshold resummation and squark-antisquark production at NLL Colour structure in threshold resummation and squark-antisquark production at NLL

2009-09-18

arxiv.org/abs/0909.3488v1

PoS EPS-HEP2009 2009:319,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

3+1 pages, contribution to the proceedings of the 2009 Europhysics Conference on High Energy Physics (EPS-HEP 2009), 16-22 Jul

Scientific paper

We consider the resummation of soft and Coulomb gluons for pair-production processes of heavy coloured particles at hadron colliders, and discuss recent results on the construction of a basis in colour space that diagonalizes the soft function to all orders in perturbation theory and the determination of the two-loop soft anomalous dimension needed for NNLL resummations. We present results for the combined NLL resummation of soft gluon and Coulomb-gluon effects for squark-antisquark production at the LHC.

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