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arXiv · 1109.3184

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

Teppo T. Jouttenus·Iain W. Stewart·Frank J. Tackmann·Wouter J. Waalewijn
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Abstract

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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Teppo T. Jouttenus, Iain W. Stewart, Frank J. Tackmann, Wouter J. Waalewijn. 2011-09-14. Jet Regions from Event Shapes and the N-Jet Soft Function at Hadron Colliders. https://doi.org/10.1063/1.3700685

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