Top-squark pair production at the LHC: a complete analysis at next-to-leading order
Jan Germer, Wolfgang Hollik, Jonas M. Lindert, Edoardo Mirabella
TL;DR
This paper provides a comprehensive next-to-leading order analysis of top-squark pair production at the LHC, including QCD and electroweak corrections within the MSSM, highlighting significant EW effects on cross sections and distributions.
Contribution
It offers the first complete NLO study of stop-pair production at the LHC with both QCD and EW corrections in the MSSM, using the latest PDFs with QED effects.
Findings
NLO EW corrections increase the cross section by 25-30%.
Significant effects on kinematic distributions are observed.
Results are compatible with observed Higgs boson data.
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 compared to the leading-order prediction. Besides corrections to inclusive cross sections also important kinematic distributions are investigated.
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