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Related Experiment Video

Updated: Dec 29, 2025

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Precise predictions for jets dark matter backgrounds.

J M Lindert¹, S Pozzorini², R Boughezal³

¹1Department of Physics, Institute for Particle Physics Phenomenology, University of Durham, Durham, DH1 3LE UK.

The European Physical Journal. C, Particles and Fields

|January 31, 2020

Summary

This summary is machine-generated.

High-energy jet production is crucial for detecting dark matter at the Large Hadron Collider (LHC). New calculations improve background predictions, enhancing sensitivity for dark matter searches.

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Last Updated: Dec 29, 2025

Setting Limits on Supersymmetry Using Simplified Models

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Area of Science:

High Energy Physics
Particle Physics
Cosmology

Background:

High-energy jets recoiling against missing transverse energy (MET) are key signatures for dark matter detection at the LHC.
Accurate control of the multijet background is essential for sensitive dark matter searches.
Theoretical predictions are vital for extrapolating background estimations from control regions.

Purpose of the Study:

To present a combination of state-of-the-art theoretical calculations for relevant multijet production processes.
To improve the precision of theoretical predictions for the multijet background in dark matter searches.
To provide recommendations for using these predictions in experimental analyses.

Main Methods:

Incorporating NNLO QCD and NLO electroweak corrections with Sudakov logarithms.
Performing calculations at the parton level for precise predictions.
Estimating theoretical uncertainties, considering correlations between different jet processes.

Main Results:

State-of-the-art calculations combining NNLO QCD and NLO electroweak corrections for multijet processes.
Predictions at parton level with recommendations for Monte Carlo reweighting.
Anticipated theoretical uncertainty in the multijet background is at the few percent level up to the TeV range.

Conclusions:

Recent advances in perturbative calculations significantly improve sensitivity in dark matter searches.
Precise theoretical predictions are crucial for reducing uncertainties in background estimations.
The study provides a robust framework for enhancing dark matter detection capabilities at the LHC.