title: Electroweak Corrections to pp→μ^{+}μ^{-}e^{+}e^{-}+X at the LHC: A Higgs Boson Background Study.
abstract: The first complete calculation of the next-to-leading-order electroweak corrections to four-lepton production at the LHC is presented, where all off-shell effects of intermediate Z bosons and photons are taken into account. Focusing on the mixed final state μ^{+}μ^{-}e^{+}e^{-}, we study differential cross sections that are particularly interesting for Higgs boson analyses. The electroweak corrections are divided into photonic and purely weak corrections. The former exhibit patterns familiar from similar W- or Z-boson production processes with very large radiative tails near resonances and kinematical shoulders. The weak corrections are of the generic size of 5% and show interesting variations, in particular, a sign change between the regions of resonant Z-pair production and the Higgs signal.
authors.affiliation: Julius-Maximilians-Universität Würzburg, Institut für Theoretische Physik und Astrophysik, D-97074 Würzburg, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Biedermann
authors.affiliation: Julius-Maximilians-Universität Würzburg, Institut für Theoretische Physik und Astrophysik, D-97074 Würzburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Denner
authors.affiliation: Albert-Ludwigs-Universität Freiburg, Physikalisches Institut, D-79104 Freiburg, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Dittmaier
authors.affiliation: Department d'Estructura i Constituents de la Matèria (ECM), Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), Martí Franquès 1, E-08028 Barcelona, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Hofer
authors.affiliation: Eberhard-Karls-Universität Tübingen, Institut für Theoretische Physik, D-72076 Tübingen, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Jäger