Anomalous quartic couplings between the electroweak gauge bosons may contribute to the vv gamma gamma and qq gamma gamma final states produced in e+e- collisions. This analysis uses the LEP2 OPAL data sample at centre-of-mass energies up to 209 GeV. Event selections identify vv gamma gamma and qq gamma gamma events in which the two photons are reconstructed within the detector acceptance. The cross-section for the process e+e- -> qq gamma gamma is measured. Averaging over all energies, the ratio of the observed e+e- -> qq gamma gamma cross-section to the Standard Model expectation is R(data/SM) = 0.92 +- 0.07 +- 0.04 where the errors represent the statistical and systematic uncertainties respectively. The vv gamma gamma and qq gamma gamma d...
The cross section of the process e^+ e^- -> Z \gamma\gamma -> qq~ \gamma \gamma is measured with 215...
The process e(+)e(-)-->W(+)W(-)gamma is analysed using the data collected with the L3 detector at LE...
The process e+e- -> W+ W- gamma is studied using the data collected by the L3 detector at LEP. New r...
Anomalous quartic couplings between the electroweak gauge bosons may contribute to the vv gamma gamm...
Anomalous quartic couplings between the electroweak gauge bosons may contribute to the νν̅ γγ and qq...
The cross section of the process e^+ e^- -> Z \gamma\gamma -> qq \gamma \gamma is measured with 215 ...
The cross section of the process e(+)e(-) --> Zgammagamma --> q (q) over bar gammagamma is measured ...
The process e(+)e(-) --> W+W- gamma is studied using the data collected by the L3 detector at LEP. N...
The process e(+)e(-)-->W(+)W(-)gamma is analysed using the data collected with the L3 detector at LE...
The cross section of the process e^+ e^- -> Z \gamma\gamma -> qq~ \gamma \gamma is measured with 215...
The process e(+)e(-)-->W(+)W(-)gamma is analysed using the data collected with the L3 detector at LE...
The process e+e- -> W+ W- gamma is studied using the data collected by the L3 detector at LEP. New r...
Anomalous quartic couplings between the electroweak gauge bosons may contribute to the vv gamma gamm...
Anomalous quartic couplings between the electroweak gauge bosons may contribute to the νν̅ γγ and qq...
The cross section of the process e^+ e^- -> Z \gamma\gamma -> qq \gamma \gamma is measured with 215 ...
The cross section of the process e(+)e(-) --> Zgammagamma --> q (q) over bar gammagamma is measured ...
The process e(+)e(-) --> W+W- gamma is studied using the data collected by the L3 detector at LEP. N...
The process e(+)e(-)-->W(+)W(-)gamma is analysed using the data collected with the L3 detector at LE...
The cross section of the process e^+ e^- -> Z \gamma\gamma -> qq~ \gamma \gamma is measured with 215...
The process e(+)e(-)-->W(+)W(-)gamma is analysed using the data collected with the L3 detector at LE...
The process e+e- -> W+ W- gamma is studied using the data collected by the L3 detector at LEP. New r...