Threshold Improved QCD Corrections for Stop-Antistop production at Hadron colliders
Ulrich Langenfeld
TL;DR
This paper provides enhanced theoretical predictions for stop-antistop production cross sections at hadron colliders by incorporating NNLO threshold and Coulomb corrections, with detailed analysis of uncertainties.
Contribution
It introduces analytic formulas for NNLO scaling functions at threshold and improves cross section predictions with systematic error analysis.
Findings
Explicit cross section numbers for Tevatron and LHC
Reduced scale and PDF uncertainties
Enhanced accuracy of theoretical predictions
Abstract
I present improved predictions for the total hadronic cross section of stop-antistop production at hadron colliders including next-to-next-to-leading-order threshold corrections and approximated Coulomb corrections. The results are based on soft corrections, which are logarithmically enhanced near threshold. I present analytic formulas for the NNLO scaling functions at threshold and explicit numbers for the total hadronic cross sections for the Tevatron and the LHC. Finally I discuss the systematic error, the scale uncertainty and the PDF error of the hadronic cross section.
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