Year: 2016
Type: article
Abstract: Soft and collinear radiation is responsible for large corrections to many hadronic cross sections, near thresholds for the production of heavy final states. There is much interest in extending our understanding of this radiation to next-to-leading power (NLP) in the threshold expansion. In this paper, we generalise a previously proposed all-order NLP factorisation formula to include non-abelian corrections. We define a nonabelian radiative jet function, organising collinear enhancements at NLP, and compute it for quark jets at one loop. We discuss in detail the issue of double counting between soft and collinear regions. Finally, we verify our prescription by reproducing all NLP logarithms in Drell-Yan production up to NNLO, including those associated with double real emission. Our results constitute an important step in the development of a fully general resummation formalism for NLP threshold effects.
Source: Journal of High Energy Physics
Authors: D. Bonocore, E. Laenen, L. Magnea, L. Vernazza, C.D. White
Institutions: National Institute for Subatomic Physics, RWTH Aachen University, University of California, Santa Barbara, Utrecht University, Institute for Theoretical Physics Amsterdam, Kavli Institute for Theoretical Physics, University of Amsterdam, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Turin, University of Edinburgh, Queen Mary University of London
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: National Science Foundation, European Commission, University of Edinburgh, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Ministero dell’Istruzione, dell’Università e della Ricerca, Science and Technology Facilities Council, Research Executive Agency, Kavli Institute for Theoretical Physics, University of California, Santa Barbara
Awards: G258938352, G40066953, G4341361603, G4773563968, G603814699, G7126973739, Simmetrie, Masse e Misteri: Rottura della simmetria elettrodebole, Mescolamento dei sapori e violazione di CP e Materia oscura nell'era di LHC., G7501008756, G7946493596, The Higgs quest - exploring electroweak symmetry breaking at the LHC, Kavli Institute for Theoretical Physics, G8575047694
OpenAlex ID: W2542723299