Jet vetoing at the LHC

Details Jet vetoing at the LHC Jet vetoing at the LHC

2009-05-08

arxiv.org/abs/0905.1350v2

JHEP 0907:023,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages

Scientific paper

10.1088/1126-6708/2009/07/023

We study the effect of a veto on additional jets in the rapidity region between a pair of high transverse momentum jets at the LHC. We aim to sum the most important logarithms in the ratio of the jet transverse momentum to the veto scale and to that end we attempt to assess the significance of the super-leading logarithms that appear at high orders in the perturbative expansion. We also compare our results to those of HERWIG++, in an attempt to ascertain the accuracy of the angular ordered parton shower. We find that there are large corrections that arise for large enough jet transverse momenta as a consequence of Coulomb gluon exchanges.

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