Jet Regions from Event Shapes and the N-Jet Soft Function at Hadron Colliders

Details Jet Regions from Event Shapes and the N-Jet Soft Function at Hadron Colliders Jet Regions from Event Shapes and the N-Jet Soft Function at Hadron Colliders

2011-09-14

arxiv.org/abs/1109.3184v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 2 figures, part of PANIC 2011 proceedings

Scientific paper

The N-jettiness event shape divides phase space into N+2 regions, each containing one jet or beam. These jet regions are insensitive to the distribution of soft radiation and, with a geometric measure for N-jettiness, have circular boundaries. We give a factorization theorem for the cross section which is fully differential in the mass of each jet, and compute the corresponding soft function at next-to-leading order (NLO). For N-jettiness, all ingredients are now available to extend NLO cross sections to resummed predictions at next-to-next-to-leading logarithmic order.

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