title: Precise predictions for top-quark-plus-missing-energy signatures at the LHC.
abstract: We study the pair production of scalar top-quark partners decaying to a top-quark pair plus large missing energy at the LHC, a signature which appears in numerous models that address outstanding problems at the TeV scale. The severe experimental search cuts require a description which combines higher-order corrections to both production and decay dynamics for a realistic final state. We do this at next-to-leading order in QCD. We find large, kinematic-dependent QCD corrections that differ dramatically depending upon the observable under consideration, potentially impacting the search for and interpretation of these states.
authors.affiliation: High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA. rboughezal@hep.anl.gov
authors.forename: Radja
authors.initials: R
authors.lastname: Boughezal
authors.forename: Markus
authors.initials: M
authors.lastname: Schulze