Graphical comparison of the LHCb measurements of W and Z boson production with ATLAS and CMS

The accompanying note is available here (LHCb-CONF-2013-005).

More detailed information: ANA note 2013-020

Abstract

Differential production cross-sections for the W boson as a function of the pseudorapidity of the lepton and for the Z boson as a function of the rapidity of the Z boson measured by LHCb are compared graphically to those measured by ATLAS and CMS. A similar comparison is made for the W lepton charge asymmetry as a function of the lepton pseudorapidity for different thresholds on the transverse momentum of the lepton. Correction factors are calculated at next-to-leading order to account for differences in the definition of the fiducial volumes of the measurements. The comparison plots show good agreement between the ATLAS and LHCb results as well as the CMS and LHCb results in the overlapping kinematic regions.

Figures

(Note, eps versions are available under attachments).

Caption Figure
Differential production cross-section for Z boson as a function of the rapidity of the Z boson. The LHCb results in the muon and the electron channel are extropalted to the fiducial volume of the ATLAS measurement (66 < Mll < 116 GeV/c2, pT > 20 GeV/c) which is shown in green. This plot is purely for illustrative purposes, the published LHCb results should be used for all comparisons with theoretical predictions. Fig1.png
Di fferential production cross-sections for W- and W+ bosons as a function of the lepton pseudorapidity. The LHCb results are extrapolated to the fi ducial volume of the ATLAS measurement (MT > 40 GeV/c2, pT> 25 GeV/c) which is shown in green. This plot is purely for illustrative purposes, the published LHCb results should be used for all comparisons with theoretical predictions. Fig2.png
Lepton charge asymmetry as a function of the pseudorapidity of the lepton. The extrapolated LHCb result is shown in comparison to the result of ATLAS (top) for MT > 40 GeV/c2. This plot is purely for illustrative purposes, the published LHCb results should be used for all comparisons with theoretical predictions. Fig3.png
Lepton charge asymmetry as a function of the pseudorapidity of the lepton. The extrapolated LHCb result is shown in comparison to the CMS results with a pT threshold of 35 GeV/c. This plot is purely for illustrative purposes, the published LHCb results should be used for all comparisons with theoretical predictions. Fig4.png
Lepton charge asymmetry as a function of the pseudorapidity of the lepton. The measured LHCb result is shown in comparison to the CMS results for a pT threshold of 25 GeV/c. No extrapolation is applied here Fig5.png
Lepton charge asymmetry as a function of the pseudorapidity of the lepton. The measured LHCb result is shown in comparison to the CMS results for a pT threshold of 30 GeV/c. No extrapolation is applied here Fig6.png
Topic attachments
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Unknown file formateps Fig1.eps r1 manage 13.7 K 2013-04-19 - 15:23 TaraShears  
PNGpng Fig1.png r1 manage 16.0 K 2013-04-19 - 15:23 TaraShears  
Unknown file formateps Fig2.eps r1 manage 16.5 K 2013-04-19 - 15:23 TaraShears  
PNGpng Fig2.png r1 manage 16.0 K 2013-04-19 - 15:23 TaraShears  
Unknown file formateps Fig3.eps r1 manage 12.0 K 2013-04-19 - 15:23 TaraShears  
PNGpng Fig3.png r1 manage 13.8 K 2013-04-19 - 15:23 TaraShears  
Unknown file formateps Fig4.eps r1 manage 11.3 K 2013-04-19 - 15:23 TaraShears  
PNGpng Fig4.png r1 manage 13.6 K 2013-04-19 - 15:23 TaraShears  
Unknown file formateps Fig5.eps r1 manage 11.9 K 2013-04-19 - 15:23 TaraShears  
PNGpng Fig5.png r1 manage 14.0 K 2013-04-19 - 15:23 TaraShears  
Unknown file formateps Fig6.eps r1 manage 12.1 K 2013-04-19 - 15:24 TaraShears  
PNGpng Fig6.png r1 manage 14.0 K 2013-04-19 - 15:24 TaraShears  
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Topic revision: r3 - 2014-03-10 - KatharinaMueller
 
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