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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Gauge coupling beta functions in the standard model to three loops
Luminita N Mihaila1, Jens Salomon, Matthias Steinhauser
1Institut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany.
Physical Review Letters
|May 17, 2012
Summary
We calculated three-loop corrections to the standard model
Area of Science:
- Particle physics
- Quantum field theory
- Standard Model
Background:
- The Standard Model describes fundamental particles and forces.
- Precise calculations of couplings are crucial for theoretical predictions.
- Higher-loop corrections refine our understanding of the Standard Model.
Purpose of the Study:
- To compute three-loop corrections to gauge couplings in the Standard Model.
- To investigate the impact of Yukawa and Higgs self-couplings on these corrections.
- To enhance the precision of theoretical predictions in particle physics.
Main Methods:
- Utilized the minimal subtraction scheme for renormalization.
- Performed three-loop calculations for gauge couplings.
- Incorporated Yukawa and Higgs self-couplings into the computation.
Main Results:
- Successfully computed the three-loop corrections to the beta functions of the three gauge couplings.
- Quantified the contribution of Yukawa and Higgs self-couplings to these corrections.
- Provided a more precise theoretical framework for the Standard Model.
Conclusions:
- The three-loop corrections offer a significant refinement to Standard Model calculations.
- Yukawa and Higgs self-couplings play a non-trivial role in the renormalization of gauge couplings.
- This work advances the precision of theoretical predictions in particle physics.
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