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.
Keywords
Cite
@article{arxiv.1109.4432,
title = {Wgamma production and limits on anomalous WWgamma couplings in ppbar collisions},
author = {The D0 Collaboration},
journal= {arXiv preprint arXiv:1109.4432},
year = {2015}
}
Comments
7 pages, 4 figures, submitted to PRL