Top-squark pair production at the LHC: a complete analysis at next-to-leading order

Abstract

We present a complete next-to-leading order study of top-squark pair production at the LHC, including QCD and EW corrections. The calculation is performed within the Minimal Supersymmetric Standard Model and numerical results are presented for parameter regions compatible with the observed Higgs boson. We employ the most recent parton distribution functions including QED corrections and we find NLO EW corrections to the inclusive stop-pair production cross section up to $25-30\%$ compared to the leading-order prediction. Besides corrections to inclusive cross sections also important kinematic distributions are investigated.

27 pages, 10 figures. Version published in JHEP. The numerical discussion in Section 3 has been extended. References have been added

References in corpus (19)

• HiggsBounds-4: Improved Tests of Extended Higgs Sectors against Exclusion Bounds from LEP, the Tevatron and the LHC
• HiggsSignals: Confronting arbitrary Higgs sectors with measurements at the Tevatron and the LHC
• Parton distributions with QED corrections
• Threshold resummation for squark-antisquark and gluino-pair production at the LHC
• High-precision predictions for the light CP-even Higgs Boson Mass of the MSSM
• The Muon Magnetic Moment and Supersymmetry
• Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in sqrt{s}=8 TeV pp collisions with the ATLAS detector
• Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders
• News from FormCalc and LoopTools
• Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction
• Search for top squark and higgsino production using diphoton Higgs boson decays
• Hadronic production of top-squark pairs with electroweak NLO contributions
• Matching Squark Pair Production at NLO with Parton Showers
• Squark anti-squark pair production at the LHC: the electroweak contribution
• QCD threshold corrections for gluino pair production at hadron colliders
• Stop-antistop and sbottom-antisbottom production at LHC: a one-loop search for model parameters dependence
• Electroweak contributions to squark--gluino production at the LHC
• NNLL Momentum-Space Resummation for Stop-Pair Production at the LHC
• Threshold Improved QCD Corrections for Stop-Antistop production at Hadron colliders

Cited by in corpus (8)

• NNLL-fast: predictions for coloured supersymmetric particle production at the LHC with threshold and Coulomb resummation
• NNLL resummation for stop pair-production at the LHC
• NLO+NLL squark and gluino production cross-sections with threshold-improved parton distributions
• Automated simulations beyond the Standard Model: supersymmetry
• Automated third generation squark production to next-to-leading order
• NNLL soft and Coulomb resummation for squark and gluino production at the LHC
• NNLL-fast 2.0: Coloured Sparticle Production at the LHC Run 3 with $\sqrt{S}$ = 13.6 TeV
• Top-quark Polarization and Asymmetries at the LHC in the Effective Description of Squark Interactions