@article{5dc0b1e06d484469aade134722469e24,
title = "Parton Showering with Higher Logarithmic Accuracy for Soft Emissions",
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 1 order beyond state-of-the-art next-to-leading logarithms, for classes of observables that are dominantly sensitive to low-energy (soft) emissions, specifically nonglobal observables and subjet multiplicities. This represents a major step toward general next-to-next-to-leading logarithmic accuracy for parton showers.",
author = "\{Ferrario Ravasio\}, Silvia and Keith Hamilton and Alexander Karlberg and Salam, \{Gavin P.\} and Ludovic Scyboz and Gregory Soyez",
note = "Funding Information: We are grateful to Pier Monni for the very considerable work involved in the comparisons of NSL nonglobal logarithms for the energy flow in a slice, in particular with regards to the extraction of pure NSL results from the Gnole code. We are grateful to our PanScales collaborators (Melissa van Beekveld, Mrinal Dasgupta, Fr{\'e}d{\'e}ric Dreyer, Basem El-Menoufi, Jack Helliwell, Rok Medves, Pier Monni, Alba Soto Ontoso, and Rob Verheyen), for their work on the code, the underlying philosophy of the approach, the adaptations of the PanGlobal shower discussed in Ref. , Sec. 1 and comments on this manuscript. This work has been funded by the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 research and innovation program (Grant Agreements No. 788223, S. F. R., K. H., A. K., G. P. S., G. S., L. S.), by a Royal Society Research Professorship (RP\textbackslash{}R1\textbackslash{}180112, G. P. S. and L. S.) and by the Science and Technology Facilities Council (STFC) under Grants No. ST/T000864/1 (G. P. S.) and No. ST/T000856/1 (K. H.). S. F. R., K. H., G. P. S., and L. S. benefited from the hospitality of the Munich Institute for Astro-, Particle and BioPhysics (MIAPbP), which is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany{\textquoteright}s Excellence Strategy—EXC-2094–390783311. K. H., G. P. S., and L. S. also wish to thank CERN{\textquoteright}s Theoretical Physics Department for hospitality while the work was being completed. Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society.",
year = "2023",
month = oct,
day = "20",
doi = "10.1103/PhysRevLett.131.161906",
language = "English",
volume = "131",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "16",
}