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JetpTresummation in Higgs production atNNLL′+NNLO

2013/07/06 by Iain W. Stewart, Frank J. Tackmann, Jonathan R. Walsh +1 · 175 citations
Mathematics · Physics and Astronomy · #Algorithm #Dimensionless quantity #Factorization #Gluon #Hadron #Higgs boson #High-Energy Particle Collisions Research #Jet (fluid) #Logarithm #Mathematical analysis #Mathematics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Rapidity #Resummation #Weierstrass factorization theorem #hep-ex #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.89.054001

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 89(5) (American Physical Society) · 24 pages, 11 figures

arxiv created 2013/07/06 · openalex publication_date 2014/03/04 · arxiv updated 2014/03/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We present predictions for Higgs production via gluon fusion with a pT veto on jets and with the resummation of jet-veto logarithms at NNLL^\ensuremath'+NNLO order. These results incorporate explicit O(\ensuremathαs2) calculations of soft and beam functions, which include the dominant dependence on the jet radius R. In particular the NNLL^\ensuremath' order accounts for the correct boundary conditions for the N3LL resummation, for which the only unknown ingredients are higher-order anomalous dimensions. We use scale variations in a factorization theorem in both rapidity and virtuality space to estimate the perturbative uncertainties, accounting for both higher fixed-order corrections as well as higher-order towers of jet-pT logarithms. This formalism also predicts the correlations in the theory uncertainty between the exclusive 0-jet and inclusive 1-jet bins. At the values of R used experimentally, there are important corrections due to jet algorithm clustering that include logarithms of R. Although we do not sum logarithms of R, we do include an explicit contribution in our uncertainty estimate to account for higher-order jet clustering logarithms. Precision predictions for this H+0-jet cross section and its theoretical uncertainty are an integral part of Higgs analyses that employ jet binning.

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