Measurement of the W → [lamda]ν and Z/[gamma]* → [lamdalamda] production cross sections in proton-proton collisions at [square root]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√=7TeV 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. 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 σtotW. BR(W → ℓν) = 9.96 ± 0.23(stat) ± 0.50(syst) ± 1.10(lumi) nb and σtotZ/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 < 116GeV). 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

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch
• Notes: Journal of high energy physics. - 2010, 12 (2010) , 60, ISSN: 1029-8479

Contributors, Places and Time

• Event: Veröffentlichung
• (where): Freiburg
• (who): Universität
• (when): 2022
• Creator: Aad, Georges ; Ahles, Florian ; Aktas, Adil ; Beckingham, M. ; Bernhard, Ralf ; Bianchi, Riccardo Maria ; Bitenc, Urban ; Bruneliere, Renaud ; Caron, Sascha ; Carpentieri, Carmen ; Christov, Asen ; Dahlhoff, Andrea ; Dietrich, Janet ; Eckert, Simon ; Fehling-Kaschek, Mirjam ; Flechl, Martin ; Glatzer, Julian ; Hartert, Jochen ; Heldmann, Michael ; Herten, Gregor ; Horner, Stephan ; Jakobs, Karl ; Joos, Dieter ; Ketterer, Christian ; König, Stefan ; Kononov, Artem I. ; Kühn, Susanne ; Lai, Stanley T. ; Landgraf, Ulrich ; Lohwasser, Kristin ; Ludwig, Inga ; Ludwig, Jens ; Lumb, Debra ; Maaßen, Michael ; Mahboubi, Kambiz ; Meinhardt, Jens Ulrich ; Messmer, I. ; Mohr, Wolfgang ; Nilsen, Halvor Moll ; Parzefall, Ulrich ; Pfeifer, B. ; Bueso, Xavier Portell ; Rammensee, Michael ; Runge, Kay ; Rúriková, Zuzana ; Schmidt, Evelyn ; Schroff, Dietrich ; Schumacher, Markus ; Störig, Kathrin ; Sundermann, Jan Erik ; Temming, Kim ; Thoma, Sascha ; Tobias, J. ; Venturi, Manuela ; Vivarelli, Iacopo ; Radziewski, Holger von ; Warsinsky, Markus ; Webel, Markus ; Weiser, Christian ; Werner, Matthias ; Wiik-Fuchs, Liv ; Winkelmann, Stefan ; Xie, Song ; Zimmermann, Stephanie ; ATLAS Collaboration CERN

Further information

• DOI: 10.1007/jhep12(2010)060
• URN: urn:nbn:de:bsz:25-freidok-2246759
• Rights: Kein Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 25.03.2025, 1:45 PM CET