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Updated: Dec 27, 2025
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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
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Jet cross sections at the LHC and the quest for higher precision
Johannes Bellm1, Andy Buckley2, Xuan Chen3
11Department of Astronomy and Theoretical Physics, Lund University, 223 62 Lund, Sweden.
The European Physical Journal. C, Particles and Fields
|February 25, 2020
Summary
This study analyzes jet production at the Large Hadron Collider, examining how jet size affects measurements. Findings improve understanding of theoretical uncertainties in particle physics experiments.
Area of Science:
- High Energy Physics
- Quantum Chromodynamics
- Collider Physics
Background:
- The Large Hadron Collider (LHC) facilitates studies of fundamental particle interactions.
- Understanding particle production, such as Z boson, Higgs boson, and di-jet events, is crucial for testing the Standard Model.
- Jet substructure and cross-section measurements are sensitive probes of Quantum Chromodynamics (QCD).
Purpose of the Study:
- To conduct a phenomenological study of Z plus jet, Higgs plus jet, and di-jet production at the LHC.
- To investigate the dependence of the leading jet cross section on jet radius and transverse momentum.
- To improve theoretical predictions and assess uncertainties in jet measurements.
Main Methods:
- Utilizing perturbative QCD calculations at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO).
- Employing a range of renormalization and factorization scales to evaluate theoretical uncertainties.
- Comparing fixed-order predictions with matched NLO calculations to parton showers.
- Estimating non-perturbative corrections using different event generators.
Main Results:
- The leading jet cross section shows a dependence on jet radius, varying with jet transverse momentum.
- Scale dependence studies provide refined estimates of theoretical uncertainties, particularly for smaller jet sizes.
- Comparisons between fixed-order and matched parton shower calculations reveal differences in predictions.
Conclusions:
- The study provides crucial insights into the behavior of jet production at the LHC.
- Results offer improved methods for estimating theoretical uncertainties in jet physics.
- Findings contribute to a more precise understanding of particle interactions and the underlying theory of strong interactions.
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