ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at sqrt(s)=7 TeV

Abstract

Mass and angular distributions of dijets produced in LHC proton-proton collisions at a centre-of-mass energy sqrt(s)=7 TeV have been studied with the ATLAS detector using the full 2011 data set with an integrated luminosity of 4.8/fb. Dijet masses up to 4.0 TeV have been probed. No resonance-like features have been observed in the dijet mass spectrum, and all angular distributions are consistent with the predictions of QCD. Exclusion limits on six hypotheses of new phenomena have been set at 95% CL in terms of mass or energy scale, as appropriate. These hypotheses include excited quarks below 2.83 TeV, colour octet scalars below 1.86 TeV, heavy W bosons below 1.68 TeV, string resonances below 3.61 TeV, quantum black holes with six extra space-time dimensions for quantum gravity scales below 4.11 TeV, and quark contact interactions below a compositeness scale of 7.6 TeV in a destructive interference scenario.

29 pages plus author list (51 pages total), 8 figures, 9 tables, submitted to the Journal of High Energy Physics, all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2011-21/

References in corpus (50)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The anti-k_t jet clustering algorithm
• A Brief Introduction to PYTHIA 8.1
• Parton distributions for the LHC
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• MadGraph 5 : Going Beyond
• New parton distributions for collider physics
• The ATLAS Simulation Infrastructure
• A General Algorithm for Calculating Jet Cross Sections in NLO QCD
• Dispelling the N^3 myth for the Kt jet-finder
• Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC
• Next-to-leading order calculation of three-jet observables in hadron-hadron collision
• Jet energy measurement with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV
• Luminosity determination in pp collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector at the LHC
• Parton Distributions for LO Generators
• Hard Interactions of Quarks and Gluons: a Primer for LHC Physics
• Three-jet cross sections in hadron-hadron collisions at next-to-leading order
• Luminosity Determination in pp Collisions at sqrt(s)=7 TeV Using the ATLAS Detector at the LHC
• Parton Distributions for LHC
• CalcHEP 2.3: MSSM, structure functions, event generation, batchs, and generation of matrix elements for other packages
• Search for new particles decaying into dijets in proton-antiproton collisions at sqrt(s) = 1.96 TeV
• Jet energy resolution in proton-proton collisions at sqrt(s) = 7 TeV recorded in 2010 with the ATLAS detector
• TeV Strings and Collider Probes of Large Extra Dimensions
• Precision electroweak calculation of the production of a high transverse-momentum lepton pair at hadron colliders
• Search for New Physics in Dijet Mass and Angular Distributions in pp Collisions at sqrt(s) = 7 TeV Measured with the ATLAS Detector
• Search for New Particles in Two-Jet Final States in 7 TeV Proton-Proton Collisions with the ATLAS Detector at the LHC
• Black Holes and Quantum Gravity at the LHC
• Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology
• BlackMax: A black-hole event generator with rotation, recoil, split branes and brane tension
• Precision electroweak calculation of the charged current Drell-Yan process
• Dijet signals for low mass strings at the LHC
• Search for New Physics in the Dijet Mass Distribution using 1 fb^-1 of pp Collision Data at sqrt(s) = 7 TeV collected by the ATLAS Detector
• Measurement of dijet angular distributions at sqrt{s}=1.96TeV and searches for quark compositeness and extra spatial dimensions
• Open statistical issues in particle physics
• On hypothesis testing, trials factor, hypertests and the BumpHunter
• Global Search for New Physics with 2.0/fb at CDF
• Search for Quark Contact Interactions in Dijet Angular Distributions in pp Collisions at sqrt(s) = 7 TeV Measured with the ATLAS Detector
• Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at 7 TeV
• LHC Phenomenology for String Hunters
• Inelastic Black Hole Production and Large Extra Dimensions
• Search for a heavy gauge boson decaying to a charged lepton and a neutrino in 1 fb-1 of pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Jet signals for low mass strings at the LHC
• A weakly constrained W' at the early LHC
• Search for Quark Compositeness with the Dijet Centrality Ratio in pp Collisions at sqrt(s)=7 TeV
• Plotting the Differences Between Data and Expectation
• Weak corrections to four-parton processes
• Orbifold Breaking of Left-Right Gauge Symmetry
• Search for a W' boson decaying to a muon and a neutrino in pp collisions at sqrt(s) = 7 TeV
• A closer look at string resonances in dijet events at the LHC

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