Measurement of the cross section of high transverse momentum production in proton--proton collisions at with the ATLAS Detector
arXiv:1404.7042 · doi:10.1016/j.physletb.2014.09.020
Abstract
This Letter reports the observation of a high transverse momentum signal in proton-proton collisions at TeV and the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5 fb. The decay is reconstructed from a pair of b-tagged jets, clustered with the anti- jet algorithm with , that have low angular separation and form a dijet with GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet background mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be \[ σ^\mathrm{fid}_{Z\rightarrow b\bar{b}} = 2.02 \pm 0.20 ({\rm stat.}) \pm0.25 ({\rm syst.)}\pm 0.06 ({\rm lumi.}){\rm\,pb} = 2.02 \pm{0.33}{\rm\,pb}, \] in good agreement with next-to-leading-order theoretical predictions.
There are 8 pages + the cover page + the author list, (20 pages total), 3 figures, 1 table, submitted to Physics Letters B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2013-04/
References in corpus (12)
- Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
- New parton distributions for collider physics
- Event generation with SHERPA 1.1
- Herwig++ Physics and Manual
- The Catchment Area of Jets
- MCFM for the Tevatron and the LHC
- Scalar and pseudoscalar Higgs production in association with a top-antitop pair
- Search for massive resonances in dijet systems containing jets tagged as W or Z boson decays in pp collisions at sqrt(s) = 8 TeV
- Search for massive resonances decaying into pairs of boosted bosons in semi-leptonic final states at sqrt(s) = 8 TeV
- Vector boson plus one jet production in POWHEG
- Search for exotic resonances decaying into WZ/ZZ in pp collisions at sqrt(s) = 7 TeV
- Energy Calibration of b-Quark Jets with Z->b-bbar Decays at the Tevatron Collider