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 for the first time. 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.

5 pages, 3 figures, 1 table, references added, discussion extended, accepted for publication in PRL

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Cited by in corpus (8)

• Stop on Top
• Squark Production and Decay matched with Parton Showers at NLO
• Towards constraining Dark Matter at the LHC: Higher order QCD predictions for $t\bar{t}+Z(Z\to {\nu }_{\ell }{\bar{\nu }}_{\ell })$
• Automated third generation squark production to next-to-leading order
• ttbar+Large missing energy from top-quark partners: a comprehensive study at NLO QCD
• Top-squark pair production at the LHC: a complete analysis at next-to-leading order
• Kinematics of Top Quark Final States: A Snowmass White Paper
• Electroweak corrections to squark-antisquark production at the LHC