[PDF] Top 20 Model-independent measurement of the W-boson helicity in top-quark decays at D0

... as the systematic uncertainty and are shown in Table II . The total systematic uncertainty is then taken into account in the likelihood by convoluting the likelihood with a ... See full document

... feature of the Compact Muon Solenoid (CMS) detector is a superconducting solenoid, 13 m in length and 6 m in diameter, which provides a uniform axial magnetic field of ...T. The ... See full document

... O. Bondu, C. Botta, H. Breuker, T. Camporesi, G. Cerminara, S. Colafranceschi 34 , M. D’Alfonso, D. d’Enterria, A. Dabrowski, A. David, F. De Guio, A. De Roeck, S. De Visscher, E. Di Marco, M. Dobson, M. Dordevic, N. ... See full document

... definition of the fiducial acceptance is based on MC simulation and uses particle-level physics objects constructed of stable particles with a mean lifetime τ > ...from W-boson ... See full document

... personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our ...acknowledge the enduring support for the construc- tion and ... See full document

... or at the LHC. The light octet is assumed to have a mass of m = 250 GeV and a width of Γ = ...For the heavy octet, the corrections to t¯ t production are ... See full document

... from W decays and are excluded from the ...included in the clustering. The momentum of a jet is determined from the vector sum of all particle momenta ... See full document

... After the discovery of the top quark in 1995 at the Tevatron proton–antiproton collider [ 1 , 2 ], a new era of top quark precision ... See full document

... applied. The analysis uses a statistical model of Poisson event counts in the three dilepton final states in the signal region (1j1t) and control regions (2j1t and ... See full document

... The top quark mass is measured in a sample enriched in events with a single top quark for the first ...time. Top quarks are reconstructed from decays ... See full document

... A W 0 boson that decays to tb contributes to single top quark production [ 5 ] for which evidence has been reported recently [ 6 ...Since the SM W boson and a ... See full document

... set of predicted distributions produced with different assumptions and applying the difference observed as a weight to the nominal W t or t ¯t ...distribution. The main uncertainties ... See full document

... to the integrated ...detailed in Ref. [ 69 ], from a calibration of the luminosity scale using x–y beam-separation ...set of predicted distributions produced with different assumptions. ... See full document

... backgrounds in the analysis. The POWHEG ...to model the W-associated (tW) and s-channel single top quark background ...events. The tt, W boson ... See full document

... source of background arises when electrons and muons are incorrectly identified as prompt and isolated (misidentified lepton ...struction of hadrons or from non-prompt or non-isolated leptons passing ... See full document

... with the higher integrated luminosity collected at 13 TeV collisions, allows for a much more ac- curate study of these ...measurements of the production cross section for ttW and ttZ ... See full document

... thank the staffs at Fermilab and collaborating insti- tutions, and acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3 (France); FASI, Rosatom and RFBR (Russia); CAPES, CNPq, FAPERJ, ... See full document

... study of the properties of the top quark is one of the major topics of the Tevatron proton-antiproton collider program at ...orders of ... See full document

... Sources of sys- tematic uncertainty considered here were the choice of generator and parton shower model, the choice of parton distribution functions, the assumed ... See full document

... Sources of sys- tematic uncertainty considered here were the choice of generator and parton shower model, the choice of parton distribution functions, the assumed ... See full document