@article{BiedermannDennerHofer2017, author = {Biedermann, Benedikt and Denner, Ansgar and Hofer, Lars}, title = {Next-to-leading-order electroweak corrections to the production of three charged leptons plus missing energy at the LHC}, series = {Journal of High Energy Physics}, volume = {10}, journal = {Journal of High Energy Physics}, number = {43}, doi = {10.1007/JHEP10(2017)043}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170219}, year = {2017}, abstract = {The production of a neutral and a charged vector boson with subsequent decays into three charged leptons and a neutrino is a very important process for precision tests of the Standard Model of elementary particles and in searches for anomalous triple-gauge-boson couplings. In this article, the first computation of next-to-leading-order electroweak corrections to the production of the four-lepton final states μ\(^{+}\)μ\(^{-}\)e\(^{+}\)ν\(_{e}\), μ\(^{+}\)μ\(^{-}\)e\(^{-}\)ν\(_{e}\), μ\(^{+}\)μ\(^{-}\)μ\(^{+}\)ν\(_{μ}\), and μ\(^{+}\)μ\(^{-}\)μ\(^{-}\)ν\(_{μ}\) at the Large Hadron Collider is presented. We use the complete matrix elements at leading and next-to-leading order, including all off-shell effects of intermediate massive vector bosons and virtual photons. The relative electroweak corrections to the fiducial cross sections from quark-induced partonic processes vary between -3\% and -6\%, depending significantly on the event selection. At the level of differential distributions, we observe large negative corrections of up to -30\% in the high-energy tails of distributions originating from electroweak Sudakov logarithms. Photon-induced contributions at next-to-leading order raise the leading-order fiducial cross section by +2\%. Interference effects in final states with equal-flavour leptons are at the permille level for the fiducial cross section, but can lead to sizeable effects in off-shell sensitive phase-space regions.}, language = {en} }