2011/07/31 by G. Aad, ATLAS Collaboration, B. Abbott +98 · 1 citation
Physics and Astronomy · #Atlas (anatomy) #Gluon #High-Energy Particle Collisions Research #Hodoscope #Jet (fluid) #Large Hadron Collider #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Parton #Parton shower #Perturbative QCD #Physics #Quantum chromodynamics #Rapidity #Resummation #hep-ex
paper · pdf · doi:10.1007/jhep09(2011)053
published as JHEP 1109 (2011) 053 · 17 pages plus author list (34 pages total), 20 individual (sub)figures, which are combined into 8 figures in the paper, submitted to JHEP. Minor changes to text and references
arxiv created 2011/08/25 · openalex publication_date 2011/09/01 · arxiv updated 2015/03/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
A measurement of jet activity in the rapidity interval bounded by a dijet system is presented. Events are vetoed if a jet with transverse momentum greater than 20 GeV is found between the two boundary jets. The fraction of dijet events that survive the jet veto is presented for boundary jets that are separated by up to six units of rapidity and with mean transverse momentum 50 < pT(avg) < 500 GeV. The mean multiplicity of jets above the veto scale in the rapidity interval bounded by the dijet system is also presented as an alternative method for quantifying perturbative QCD emission. The data are compared to a next-to-leading order plus parton shower prediction from the POWHEG-BOX, an all-order resummation using the HEJ calculation and the PYTHIA, HERWIG++ and ALPGEN event generators. The measurement was performed using pp collisions at sqrt(s)=7 TeV using data recorded by the ATLAS detector in 2010.