First study of the radiation-amplitude zero in $W \gamma$ production and limits on anomalous $W W \gamma$ couplings at $\sqrt{s}$ = 1.96- TeV
(2008) Physical Review Letters — Vol. 100 (2008)
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- Abstract
- We present results from a study of p-pbar -> W(gamma) + X events utilizing data corresponding to 0.7 fb^{-1} of integrated luminosity at sqrt(s) = 1.96 TeV collected by the D0 detector at the Fermilab Tevatron Collider. We set limits on anomalous WWgamma couplings at the 95% C.L. The one dimensional 95% C.L. limits are 0.49 < kappa_{gamma} < 1.51 and -0.12 < lambda_{gamma} < 0.13. We make the first study of the charge-signed rapidity difference between the lepton and the photon and find it to be indicative of the standard model radiation-amplitude zero in the Wgamma system.
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Tanasijczuk, A. J., D0, & et al. (2008). First study of the radiation-amplitude zero in $W \gamma$ production and limits on anomalous $W W \gamma$ couplings at $\sqrt{s}$ = 1.96- TeV. Physical Review Letters, 100. https://doi.org/10.1103/PhysRevLett.100.241805 (Original work published 2008)