DOI: 10.17182/hepdata.61926.v1/t17
title: "Table 17" of "Measurements of Wgamma and Zgamma production in pp collisions at sqrt{s}= 7 TeV with the ATLAS detector at the LHC"

description: Normalised fiducial cross section of Zgamma (l+;l+;gamma) decay channel in bins of the jet multiplicity with leading photon pT &gt; 15 GeV.
description: CERN-LHC. Measurements of the cross sections for Wgamma and Zgamma production in proton proton collisions at a centre-of mass energy of 7 TeV. The integrated and differential fiducial cross sections for the production of a W or Z boson in association with a high-energy photon are measured at sqrt(s) = 7 TeV. The analyses use a data sample with an integrated luminosity of 4.6 fb^{-1} collected by the ATLAS detector during the 2011 LHC data-taking period. Events are selected using leptonic decays of the W and Z bosons (W(e nu, mu nu) and Z(e+ e-, mu+ mu-, nu nubar)) with the requirement of an associated isolated photon. The data are used to test the electroweak sector of the Standard Model and search for evidence for new phenomena. The measurements are used to probe the anomalous WWgamma, ZZgamma and Zgammagamma triple-gauge-boson couplings and to search for the production of vector resonances decaying to Zgamma and Wgamma. No deviations from Standard Model predictions are observed and limits are placed on anomalous triple-gauge-boson couplings and on the production of new vector meson resonances 

Specific Cuts for Wgamma (l;nu;gamma) decay channel inclusive measurement 

- PT of leading lepton &gt; 25 GeV 
- Lepton kinematics account for photon contributions within Delta R=0.1 
- pseudorapidity of lepton: |eta|&lt;2.47 
- PT of leading photon &gt; 15 GeV 
- pseudorapidity of photon: |eta|&lt;2.37 
- Delta R(lepton;photon)&gt;0.7 
- photon relative isolation fraction&lt;0.5 
- missing transverse momentum &gt;35GeV 

Specific Cuts for Wgamma (l;nu;gamma) decay channel exclusive measurement (with jet veto) 

- PT of leading lepton &gt; 25 GeV 
- Lepton kinematics account for photon contributions within Delta R=0.1 
- pseudorapidity of lepton: |eta|&lt;2.47 
- PT of leading photon &gt; 15 GeV 
- pseudorapidity of leptons: |eta|&lt;2.47 
- Delta R(lepton;photon)&gt;0.7 
- photon relative isolation fraction&lt;0.5 
- missing transverse momentum &gt;35GeV 
- No Truth Jets with PT &gt; 30 GeV in |Y|&lt;4.4 and |Delta R(jet,lepton)|&gt;0.3 and |Delta R(jet,photon)|&gt;0.3 (Particle-level jets defined by Anti- with =0.4500 500 1001 1004 1016 1020 

Specific Cuts for Zgamma (l+;l-;gamma) decay channel inclusive measurement 

- PT of lepton &gt; 25 GeV 
- Lepton kinematics account for photon contributions within Delta R=0.1 
- pseudorapidity of leptons: |eta|&lt;2.47 
- PT of leading photon &gt; 15 GeV 
- pseudorapidity of photon: |eta|&lt;2.37 
- Delta R(leptons;photon)&gt;0.7 
- photon relative isolation fraction&lt;0.5 
- dilepton mass &gt; 40 GeV 

Specific Cuts for Zgamma (l+;l-;gamma) decay channel exclusive measurement (with jet veto) 

- PT of lepton &gt; 25 GeV 
- Lepton kinematics account for photon contributions within Delta R=0.1 
- pseudorapidity of leptons: |eta|&lt;2.47 
- PT of leading photon &gt; 15 GeV 
- pseudorapidity of photon: |eta|&lt;2.37 
- Delta R(leptons;photon)&gt;0.7 
- photon relative isolation fraction&lt;0.5 
- dilepton mass &gt; 40 GeV 
- No Truth Jets with PT &gt; 30 GeV in |Y|&lt;4.4 and |Delta R(jet,lepton)|&gt;0.3 and |Delta R(jet,photon)|&gt;0.3 (Particle-level jets defined by Anti- with =0.4500 500 1001 1004 1016 1020 

Specific Cuts for Zgamma (nu;nubar;gamma) decay channel inclusive measurement 

- PT of leading photon &gt; 100 GeV 
- photon relative isolation fraction &lt; 0.5 
- missing transverse momentum &gt;90GeV 

Specific Cuts for Zgamma (nu;nubar;gamma) decay channel exclusive measurement (with jet veto) 

- PT of leading photon &gt; 100 GeV 
- photon relative isolation fraction &lt; 0.5 
- missing transverse momentum &gt;90GeV 
- No Truth Jets with PT &gt; 30 GeV in |Y|&lt;4.4 and |Delta R(jet,lepton)|&gt;0.3 and |Delta R(jet,photon)|&gt;0.3 (Particle-level jets defined by Anti- with =0.4500 500 1001 1004 1016 1020 

Note added (25 JUN 2014):
The cross section values reported in Tables 1,2,3,4,5,6,7,8,11,12 below should be multiplied by a factor of 1.0141 to take into account the updated value of the integrated luminosity for the ATLAS 2011 data taking period. The uncertainty on the global normalisation ("Lumi") remains at 1.8%. See Eur.Phys.J. C73 (2013) 2518 for more details.