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Higgs Boson Production in Association with a Jet at Next-to-Next-to-Leading Order
Radja Boughezal1, Fabrizio Caola2, Kirill Melnikov3
1High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Physical Review Letters
|September 5, 2015
Summary
Precise predictions for Higgs boson production with jets were calculated using advanced quantum chromodynamics (QCD) corrections. These findings improve theoretical reliability and experimental analysis at the Large Hadron Collider (LHC).
Area of Science:
- High Energy Physics
- Quantum Chromodynamics
- Standard Model Physics
Background:
- The Higgs boson is a fundamental particle in the Standard Model, responsible for giving mass to other particles.
- Understanding Higgs boson production mechanisms is crucial for testing the Standard Model and searching for new physics.
- Previous calculations at next-to-leading order (NLO) in QCD had significant theoretical uncertainties due to scale dependence.
Purpose of the Study:
- To provide precise theoretical predictions for Higgs boson production in association with a jet at the Large Hadron Collider (LHC).
- To improve the accuracy of calculations by including next-to-next-to-leading order (NNLO) quantum chromodynamics (QCD) corrections.
- To assess the convergence of the perturbative series for this process.
Main Methods:
- Utilizing the Higgs effective field theory (HEFT) framework.
- Computing NNLO QCD corrections for the dominant gluon-gluon and quark-gluon production channels.
- Presenting both fully differential results and total cross-sections.
Main Results:
- NNLO QCD corrections significantly reduce theoretical uncertainties by over a factor of 2 compared to NLO predictions.
- The total production rate is enhanced by approximately 20% at NNLO compared to NLO.
- Demonstrated satisfactory convergence of the perturbative series for the first time.
Conclusions:
- The NNLO QCD corrections provide a substantial improvement in the precision of theoretical predictions for Higgs boson plus jet production.
- These refined predictions are essential for precise phenomenological studies and interpretations of LHC data.
- The improved convergence indicates the reliability of the theoretical framework and calculations at this precision level.
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