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.

10 pages, 5 figures

References in corpus (10)

• PYTHIA 6.4 Physics and Manual
• New parton distributions for collider physics
• Herwig++ Physics and Manual
• Scaling Patterns for QCD Jets
• Jet vetoing at the LHC
• A simple description of jet cross-section ratios
• Gaps between jets in hadronic collisions
• Gaps between jets at hadron colliders in the next-to-leading BFKL framework
• Jet energy flow at the LHC
• Gaps between jets in double-Pomeron-exchange processes at the LHC

Cited by in corpus (8)

• Resummation of non-global logarithms at finite $N_c$
• Non-global logarithms in jet and isolation cone cross sections
• Hemisphere jet mass distribution at finite $N_c$
• Non-global logarithms in hadron collisions at $N_c=3$
• Factorization of Non-Global LHC Observables and Resummation of Super-Leading Logarithms
• Jets and threshold summation in Deductor
• Studies of Quantum Chromodynamics at the LHC
• Soft Gluons and Jets at the LHC