Suchergebnisse

This paper describes the data acquisition and high level trigger system of the ATLAS experiment at the Large Hadron Collider at CERN, as deployed during Run 1. Data flow as well as control, configuration and monitoring aspects are addressed. An overview of the functionality of the system and of its performance is presented and design choices are discussed. ; Funding: We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, the Canada Council, CANARIE, CRC, Compute Canada, FQRNT, and the Ontario Innovation Trust, Canada; EPLANET, ERC, FP7, Horizon 2020 and Marie Sklodowska-Curie Actions, European Union; Investissements d'Avenir Labex and Idex, ANR, Region Auvergne and Fondation Partager le Savoir, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF; BSF, GIF and Minerva, Israel; BRF, Norway; the Royal Society and Leverhulme Trust, United Kingdom.

Department of Energy (United States of America) ; National Science Foundation (United States of America) ; Australian Research Council (Australia) ; National Council for the Development of Science and Technology ; Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) ; Natural Sciences and Engineering Research Council (Canada) ; Chinese Academy of Sciences ; National Natural Science Foundation of China (China) ; Administrative Department of Science, Technology and Innovation (Colombia) ; Ministry of Education, Youth and Sports (Czech Republic) ; Academy of Finland (Finland) ; Alternative Energies and Atomic Energy Commission ; National Center for Scientific Research/National Institute of Nuclear and Particle Physics (France) ; Bundesministerium fur Bildung und Forschung (Federal Ministry of Education and Research) ; Deutsche Forschungsgemeinschaft (German Research Foundation) (Germany) ; Department of Atomic Energy (India) ; Department of Science and Technology (India) ; Science Foundation Ireland (Ireland) ; Istituto Nazionale di Fisica Nucleare (National Institute for Nuclear Physics) (Italy) ; Ministry of Education, Culture, Sports, Science and Technology (Japan) ; Korean World Class University Program ; National Research Foundation (Korea) ; National Council of Science and Technology (Mexico) ; Foundation for Fundamental Research on Matter (The Netherlands) ; National Science Council (Republic of China) ; Ministry of Education and Science of the Russian Federation ; National Research Center Kurchatov Institute of the Russian Federation ; Russian Foundation for Basic Research (Russia) ; Slovak R&D Agency (Slovakia) ; Ministry of Science and Innovation ; Consolider-Ingenio Program (Spain) ; Swedish Research Council (Sweden) ; Swiss National Science Foundation (Switzerland) ; Ministry of Education and Science of Ukraine (Ukraine) ; Science and Technology Facilities Council ; Royal Society (United Kingdom) ; A. P. Sloan Foundation (United States of America) ; European Union community Marie Curie Fellowship ; European Union community Marie Curie Fellowship: 302103 ; Drell-Yan lepton pairs produced in the process p (p) over bar -> l(+)l(-) + X through an intermediate gamma*/Z boson have an asymmetry in their angular distribution related to the spontaneous symmetry breaking of the electroweak force and the associated mixing of its neutral gauge bosons. The CDF and D0 experiments have measured the effective-leptonic electroweak mixing parameter sin(2) theta(lept)(eff) using electron and muon pairs selected from the full Tevatron proton-antiproton data sets collected in 2001-2011, corresponding to 9-10 fb(-1) of integrated luminosity. The combination of these measurements yields the most precise result from hadron colliders, sin(2)theta(lept)(eff) = 0.23148 +/- 0.00033. This result is consistent with, and approaches in precision, the best measurements from electron-positron colliders. The standard model inference of the on-shell electroweak mixing parameter sin(2) theta(W), or equivalently the W-boson mass M-W, using the ZFITTER software package yields sin(2) theta(W) = 0.22324 +/- 0.00033 or equivalently, M-W = 80.367 +/- 0.017 GeV/c(2).

Department of Energy ; National Science Foundation (U.S.A.) ; Australian Research Council (Australia) ; National Council for the Development of Science and Technology ; Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) ; European Union community Marie Curie Fellowship Contract ; European Union community Marie Curie Fellowship Contract: 302103 ; : DE-AC02-07CH11359 ; The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of root s = 1.96 TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is A(FB)(t (t) over bar) = 0.128 +/- 0.025. The combined inclusive and differential asymmetries are consistent with recent standard model predictions.