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- Hatta, Y., et al.
(author)
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A QCD description of the ATLAS jet veto measurement
- 2013
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In: Physical Review D. - 1550-7998 .- 1550-2368. ; 87:5, s. 054016-
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Journal article (peer-reviewed)abstract
- We present a new QCD description of the ATLAS jet veto measurement, using the Banfi-Marchesini-Smye equation to constrain the interjet 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 nonglobal logarithms. We show that this approach is able to reproduce, with no fitting parameters, the fraction of high-p(T) forward-backward dijet events which do not contain additional hard emissions in the interjet rapidity range. We also compute the gap fraction in fixed-order perturbation theory to O(alpha(2)(s)) and show that the perturbative series is unstable at large rapidity intervals.
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