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NNLL Resummation for Jet Broadening

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arxiv 1210.0580 v1 pith:FEIUBTUW submitted 2012-10-01 hep-ph

Thomas Becher , Guido Bell This is my paper
classification hep-ph
keywords accuracyanomalybroadeningfunctionsresummationsoftallowalpha
verification ladder T0 review T1 audit T2 compute T3 formal
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The resummation for the event-shape variable jet broadening is extended to next-to-next-to-leading logarithmic accuracy by computing the relevant jet and soft functions at one-loop order and the collinear anomaly to two-loop accuracy. The anomaly coefficient is extracted from the soft function and expressed in terms of polylogarithmic as well as elliptic functions. With our results, the uncertainty on jet-broadening distributions is reduced significantly, which should allow for a precise determination of the strong coupling constant from the existing experimental data and provide a consistency check on the extraction of alpha_s from higher-log resummations of thrust.

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Cited by 1 Pith paper

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  1. Precise Predictions for Event Shapes in Hadronic Higgs Decays

    hep-ph 2025-08 conditional novelty 6.0 of 10

    First NNLO QCD predictions for six classical event-shape distributions and soft-drop thrust in hadronic Higgs decays, for both H to b bbar and H to gg channels.

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