Published December 2010
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Journal Article
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Measurement of the W → ℓν and Z/γ^* → ℓℓ production cross sections in proton-proton collisions at √s = 7 TeV with the ATLAS detector
Abstract
First measurements of the W → ℓν and Z/γ^* → ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at √s = 7 TeV are presented using data recorded by the ATLAS experiment at the LHC. The results are based on 2250 W → ℓν and 179 Z/γ^* → ℓℓ candidate events selected from a data set corresponding to an integrated luminosity of approximately 320 nb^(-1). The measured total W and Z/γ^∗-boson production cross sections times the respective leptonic branching ratios for the combined electron and muon channels are σ^(tot)_W . BR(W → ℓν) = 9.96 ± 0.23(stat) ± 0.50(syst) ± 1.10(lumi) nb and σ^(tot)_(Z/γ) BR(Z/γ^∗ → ℓℓ) = 0.82 ± 0.06 (stat) ± 0.05 (syst) ± 0.09(lumi) nb (within the invariant mass window 66 < m_(ℓℓ) < 116 GeV). The W/Z cross-section ratio is measured to be 11.7 ± 0.9(stat) ± 0.4(syst). In addition, measurements of the W^+ and W^− production cross sections and of the lepton charge asymmetry are reported. Theoretical predictions based on NNLO QCD calculations are found to agree with the measurements.
Additional Information
© 2010 The Author(s). This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Received: October 13, 2010. Accepted: November 24, 2010. Published: December 14, 2010. We wish to thank CERN for the efficient commissioning and operation of the LHC during this initial high-energy data-taking period as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MEYS (MSMT), MPO and CCRC, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; ARTEMIS, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNAS, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA) and in the Tier-2 facilities worldwide.Attached Files
Published - 10.1007_2FJHEP12_2010_060.pdf
Submitted - 1010.2130.pdf
Files
10.1007_2FJHEP12_2010_060.pdf
Additional details
Identifiers
- Eprint ID
- 85263
- Resolver ID
- CaltechAUTHORS:20180313-074316091
Related works
- Describes
- https://arxiv.org/abs/1010.2130 (URL)
Funding
- ANPCyT (Argentina)
- YerPhl (Armenia)
- Australian Research Council
- BMWF (Austria)
- ANAS (Azerbaijan)
- SSTC (Belarus)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- National Research Council of Canada
- CERN
- Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)
- Chinese Academy of Sciences
- Ministry of Science and Technology (China)
- National Natural Science Foundation of China
- Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
- Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
- MPO and CCRC (Czech Republic)
- Danish National Research Foundation
- DNSRC and Lundbeck Foundation (Denmark)
- ARTEMIS
- European Union
- Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
- Centre National de la Recherche Scientifique (CNRS)
- Commissariat à l'Energie Atomique (CEA)
- Georgian National Academy of Sciences
- Bundesministerium für Bildung und Forschung (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)
- Max-Planck-Gesellschaft
- General Secretariat for Research and Technology (GSRT)
- Israel Science Foundation
- Istituto Nazionale di Fisica Nucleare (INFN)
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- CNRST (Morocco)
- Fundamenteel Onderzoek der Materie (FOM)
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
- Research Council of Norway
- Ministerstwo Nauki i Szkolnictwa Wyższego (MNiSW)
- GRICES (Portugal)
- MERYS (MECTS) (Romania)
- ROSATOM
- Joint Institute for Nuclear Research (JINR)
- Ministry of Education, Science and Technological Development (Serbia)
- MSSR (Slovakia)
- ARRS and MVZT (Slovenia)
- DST/NRF (South Africa)
- Ministerio de Ciencia e Innovación (MCINN)
- Swedish Research Council
- SER (Switzerland)
- Swiss National Science Foundation (SNSF)
- National Science Council (Taipei)
- Türkiye Atom Enerjisi Kurumu (TAEK)
- Science and Technology Facilities Council (STFC)
- Royal Society
- Leverhulme Trust
- Department of Energy (DOE)
- NSF
- Canada Foundation for Innovation
- Alexander von Humboldt Foundation
- German-Israeli Foundation for Research and Development
- Japan Society for the Promotion of Science (JSPS)
- Fundação para a Ciência e a Tecnologia (FCT)
- Knut and Alice Wallenberg Foundation
- Ministry of Education and Science of the Russian Federation
Dates
- Created
-
2018-03-13Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field