Electroweak Measurements with the ATLAS and CMS Experiments

Abstract

Highlights of ATLAS and CMS measurements involving the production of heavy electroweak gauge bosons, W and Z, at the LHC are presented. Cross sections of single W and Z bosons are studied with very high precision and differential in various kinematic variables. The rapidity differential measurements are shown to have a so far unique impact on our knowledge of proton structure with regards to the strange quark density. The production in association with one or more light or heavy flavour jets is studied. Furthermore measurements of τ final states, W polarisation and the weak mixing angle sin2θW are presented. Various di-boson measurements are presented and measurements are in general found to be well described by the Standard Model predictions. These measurements test the non-Abelian gauge structure and limits on anomalous triple gauge couplings are derived, which are of impact comparable to the corresponding LEP and Tevatron results.

arXiv comment8 pages, 12 figures. To appear in the proceedings of the 47th Recontres de Moriond, EW session, 2012

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• Measurement of the Inclusive W and Z Production Cross Sections in pp Collisions at sqrt(s) = 7 TeV
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• Measurement of the lepton charge asymmetry in inclusive W production in pp collisions at sqrt(s) = 7 TeV
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• Measurement of the WW cross section in sqrt(s) = 7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings
• Measurement of W-gamma and Z-gamma production in pp collisions at sqrt(s) = 7 TeV
• Measurement of the Z/gamma* + b-jet cross section in pp collisions at 7 TeV
• Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at sqrt(s) = 7 TeV with the ATLAS experiment
• Measurement of the Inclusive Z Cross Section via Decays to Tau Pairs in pp Collisions at sqrt(s)=7 TeV
• Measurement of the cross-section for b-jets produced in association with a Z boson at sqrt(s)=7 TeV with the ATLAS detector
• Measurement of the WZ production cross section and limits on anomalous triple gauge couplings in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
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