N-jettiness soft function at next-to-next-to-leading order in perturbative QCD
Prem Agarwal, Kirill Melnikov, Iván Pedron
Abstract
A bstract We derive a compact representation of the renormalized N -jettiness soft function that is free of infrared and collinear divergences through next-to-next-to-leading order in perturbative QCD. The number of hard partons N is a parameter in the formula for the finite remainder. Cancellation of all infrared and collinear singularities between the bare soft function and its renormalization matrix in color space is demonstrated analytically.
Topics & Concepts
Perturbative QCDOrder (exchange)Quantum chromodynamicsFunction (biology)PhysicsParticle physicsQuantum electrodynamicsMathematical physicsBusinessBiologyFinanceEvolutionary biologyParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsBlack Holes and Theoretical Physics