%0 Journal Article
%T A QCD description of the ATLAS jet veto measurement
%A Hatta
%A Y.
%A Marquet
%A C.
%A Royon
%A C.
%A Soyez
%A G.
%A Ueda
%A T.
%A Werder
%A D.
%J High Energy Physics - Phenomenology
%D 2013
%I 
%X 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.
%U http://arxiv.org/abs/1301.1910