Wgamma production and limits on anomalous WWgamma couplings in ppbar collisions

Abstract

We measure the cross section and the difference in rapidities between photons and charged leptons for inclusive W -> lnu+gamma production in egamma and mugamma final states. Using data corresponding to an integrated luminosity of 4.2 fb-1 collected with the D0 detector at the Fermilab Tevatron Collider, the cross section multiplied by the branching fraction for the process ppbar -> Wgamma+X -> lnugamma+X, measured to be 15.8 +/- 0.8 (stat.) +/- 1.2 (syst.) pb, and the distribution of the charge-signed photon-lepton rapidity difference are found to be in agreement with the standard model. These results provide the most stringent limits on anomalous WWgamma couplings for data from hadron colliders: -0.4 < Delta kappa_gamma < 0.4 and -0.08 < lambda_gamma < 0.07 at the 95% C.L.

7 pages, 4 figures, submitted to PRL

References in corpus (6)

• PYTHIA 6.4 Physics and Manual
• Measurement of W-gamma and Z-gamma production in pp collisions at sqrt(s) = 7 TeV
• First study of the radiation-amplitude zero in Wgamma production and limits on anomalous WWgamma couplings at sqrt(s)=1.96 TeV
• Search for resonant diphoton production with the D0 detector
• Search for Supersymmetry in Di-Photon Final States at sqrt{s} = 1.96 TeV
• Search for $WH$ associated production in 5.3 fb${}^{-1}$ of $p\bar{p}$ collisions at the Fermilab Tevatron

Cited by in corpus (13)

• NLO QCD and electroweak corrections to $Z+\gamma$ production with leptonic Z-boson decays
• Limits on anomalous trilinear gauge boson couplings from WW, WZ and Wgamma production in pp-bar collisions at sqrt{s}=1.96 TeV
• Evidence of $W\gamma \gamma$ production in $pp$ collisions at $\sqrt{s}=8$ TeV and limits on anomalous quartic gauge couplings with the ATLAS detector
• Wgamma and Zgamma production at the LHC in NNLO QCD
• NLO QCD and electroweak corrections to W+γ production with leptonic W-boson decays
• Electron and Photon Identification in the D0 Experiment
• W gamma production in hadronic collisions using the POWHEG+MiNLO method
• Heavy Fermion Non-Decoupling Effects in Triple Gauge Boson Vertices
• Constraints on CP-violating gauge-Higgs operators
• CP violating anomalous couplings in $W\gamma$ and $Z\gamma$ production at the LHC
• Review of Physics Results from the Tevatron: Electroweak Physics
• Probing triple-gauge couplings in anomalous gauge theories at hadron and lepton colliders
• $W\gamma$ and $Z\gamma$ production and limits on anomalous $WW\gamma$, $ZZ\gamma$ and $Z\gamma \gamma$ couplings with D0 detector