G. Aad, T. Abajyan, B. Abbott, S.A. Khalek, O. Abdinov, K. Augsten, P. Gallus, J. Günther, J. Jakůbek, Z. Kohout et al.: Measurement of the production of a W boson in association with a charm quark in pp collisions at root s=7 TeV with the ATLAS detector. Journal of High Energy Physics 2014(5), 68 (2014). doi:10.1007/JHEP05(2014)068