Parton showering with higher-logarithmic accuracy for soft emissions
Silvia Ferrario Ravasio, Keith Hamilton, Alexander Karlberg, Gavin P., Salam, Ludovic Scyboz, Gregory Soyez
TL;DR
This paper introduces a novel formulation of parton shower algorithms that achieves next-to-next-to-leading logarithmic accuracy for soft emissions, improving the precision of collider data interpretation.
Contribution
It presents the first formulation of parton showers with accuracy one order beyond current next-to-leading logarithms for soft-sensitive observables.
Findings
Enhanced accuracy for non-global observables
Improved modeling of subjet multiplicities
Advancement towards NNLL accuracy in parton showers
Abstract
The accuracy of parton-shower simulations is often a limiting factor in the interpretation of data from high-energy colliders. We present the first formulation of parton showers with accuracy one order beyond state-of-the-art next-to-leading logarithms, for classes of observable that are dominantly sensitive to low-energy (soft) emissions, specifically non-global observables and subjet multiplicities. This represents a major step towards general next-to-next-to-leading logarithmic accuracy for parton showers.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions