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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

Aad, G. and Gray, H. M. and Lopez Mateos, D. and Marshall, Z. and Perez, K. and Yoshida, H. (2010) Measurement of the W → ℓν and Z/γ^* → ℓℓ production cross sections in proton-proton collisions at √s = 7 TeV with the ATLAS detector. Journal of High Energy Physics, 2010 (12). Art. No. 60. ISSN 1126-6708. https://resolver.caltech.edu/CaltechAUTHORS:20180313-074316091

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1007/JHEP12(2010)060DOIArticle
https://link.springer.com/article/10.1007/JHEP12%282010%29060PublisherArticle
https://arxiv.org/abs/1010.2130arXivDiscussion Paper
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.
Funders:
Funding AgencyGrant Number
ANPCyT (Argentina)UNSPECIFIED
YerPhl (Armenia)UNSPECIFIED
Australian Research CouncilUNSPECIFIED
BMWF (Austria)UNSPECIFIED
ANAS (Azerbaijan)UNSPECIFIED
SSTC (Belarus)UNSPECIFIED
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
National Research Council of CanadaUNSPECIFIED
CERNUNSPECIFIED
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)UNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
Ministry of Science and Technology (China)UNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)UNSPECIFIED
Ministry of Education, Youth and Sports (MEYS) of the Czech RepublicUNSPECIFIED
MPO and CCRC (Czech Republic)UNSPECIFIED
Danish National Research FoundationUNSPECIFIED
DNSRC and Lundbeck Foundation (Denmark)UNSPECIFIED
ARTEMISUNSPECIFIED
European UnionUNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Georgian National Academy of SciencesUNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)UNSPECIFIED
Max-Planck-GesellschaftUNSPECIFIED
General Secretariat for Research and Technology (GSRT)UNSPECIFIED
Israel Science FoundationUNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Ministry of Education, Culture, Sports, Science and Technology (MEXT)UNSPECIFIED
CNRST (Morocco)UNSPECIFIED
Fundamenteel Onderzoek der Materie (FOM)UNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Research Council of NorwayUNSPECIFIED
Ministerstwo Nauki i Szkolnictwa Wyższego (MNiSW)UNSPECIFIED
GRICES (Portugal)UNSPECIFIED
MERYS (MECTS) (Romania)UNSPECIFIED
ROSATOMUNSPECIFIED
Joint Institute for Nuclear Research (JINR)UNSPECIFIED
Ministry of Education, Science and Technological Development (Serbia)UNSPECIFIED
MSSR (Slovakia)UNSPECIFIED
ARRS and MVZT (Slovenia)UNSPECIFIED
DST/NRF (South Africa)UNSPECIFIED
Ministerio de Ciencia e Innovación (MCINN)UNSPECIFIED
Swedish Research CouncilUNSPECIFIED
SER (Switzerland)UNSPECIFIED
Swiss National Science Foundation (SNSF)UNSPECIFIED
National Science Council (Taipei)UNSPECIFIED
Türkiye Atom Enerjisi Kurumu (TAEK)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Royal SocietyUNSPECIFIED
Leverhulme TrustUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Canada Foundation for InnovationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
German-Israeli Foundation for Research and DevelopmentUNSPECIFIED
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
Fundação para a Ciência e a Tecnologia (FCT)UNSPECIFIED
Knut and Alice Wallenberg FoundationUNSPECIFIED
Ministry of Education and Science of the Russian FederationUNSPECIFIED
Subject Keywords:Hadron-Hadron Scattering
Issue or Number:12
Record Number:CaltechAUTHORS:20180313-074316091
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180313-074316091
Official Citation:The ATLAS Collaboration, Aad, G., Abbott, B. et al. J. High Energ. Phys. (2010) 2010: 60. https://doi.org/10.1007/JHEP12(2010)060
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85263
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:13 Mar 2018 22:06
Last Modified:03 Oct 2019 19:28

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