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Discriminating between Higgs Production Mechanisms via Jet Charge at the LHC
Hai Tao Li1, Bin Yan2, C-P Yuan3
1School of Physics, Shandong University, Jinan, Shandong 250100, China.
Physical Review Letters
|August 11, 2023
Summary
A new method using jet charge asymmetry can distinguish Higgs production mechanisms at the Large Hadron Collider (LHC). This technique helps determine Higgs boson couplings to gauge bosons, probing electroweak symmetry breaking.
Area of Science:
- High Energy Physics
- Particle Physics
- Quantum Field Theory
Background:
- Distinguishing Higgs boson production mechanisms is vital for understanding electroweak symmetry breaking.
- Precise measurement of Higgs boson couplings to gauge bosons is a key goal of current and future collider experiments.
Purpose of the Study:
- To propose a novel method for discriminating between different Higgs production mechanisms at the Large Hadron Collider (LHC).
- To disentangle W fusion, Z fusion, and gluon fusion processes contributing to Higgs plus two jets production.
Main Methods:
- Utilizing the jet charge asymmetry of the two leading forward jets in Higgs plus two jets events.
- Analyzing the electric charge correlation of the leading jets to differentiate production channels.
Main Results:
- The proposed jet charge asymmetry observable successfully distinguishes W fusion from Z fusion and gluon fusion processes.
- The method allows for robust constraints on Higgs boson couplings to gauge bosons, independent of Higgs width modifications.
Conclusions:
- The novel jet charge asymmetry measurement offers a powerful tool for probing Higgs boson properties.
- This observable complements Higgs signal strength measurements at the High Luminosity LHC (HL-LHC) for comprehensive coupling determination.
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