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A QCD description of the ATLAS jet veto measurement

Abstract : We present a new QCD description of the ATLAS jet veto measurement, using the Banfi-Marchesini-Smye equation to constrain the inter-jet QCD radiation. This equation resums emissions of soft gluons at large angles, at leading-logarithmic accuracy, and accounts for both the so-called Sudakov and non-global logarithms. We show that this approach is able to reproduce, with no fitting parameters, the fraction of high-pT forward/backward di-jet events which do not contain additional hard emissions in the inter-jet rapidity range. We also compute the gap fraction in fixed-order perturbation theory to O(alpha_s^2) and show that the perturbative series is unstable at large rapidity intervals.
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Preprints, Working Papers, ...
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https://hal-cea.archives-ouvertes.fr/cea-01068781
Contributor : Emmanuelle de Laborderie <>
Submitted on : Friday, September 26, 2014 - 12:51:47 PM
Last modification on : Wednesday, June 5, 2019 - 9:42:02 AM

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  • HAL Id : cea-01068781, version 1
  • ARXIV : 1301.1910

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Y. Hatta, Catherine Marquet, C. Royon, Gregory Soyez, T. Ueda, et al.. A QCD description of the ATLAS jet veto measurement. 2013. ⟨cea-01068781⟩

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