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.
Agarwal, P., Melnikov, K., Pedron, I. (2024). N-jettiness soft function at next-to-next-to-leading order in perturbative QCD. JOURNAL OF HIGH ENERGY PHYSICS, 2024(5) [10.1007/JHEP05(2024)005].
N-jettiness soft function at next-to-next-to-leading order in perturbative QCD
Pedron I.
2024
Abstract
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.
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