The Higgs boson’s trajectory at CERN’s Large Hadron Collider (LHC)

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Introduction

The Higgs boson, predicted in the 1960s by Peter Higgs and colleagues, is the quantum manifestation of the Higgs field, responsible for giving mass to fundamental particles. Its experimental confirmation at CERN’s LHC in July 2012 by the ATLAS and CMS collaborations marked a turning point in particle physics CERN.

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Discovery at the LHC

• Collision Energy: The Higgs boson was observed during proton-proton collisions at 7–8 TeV in LHC Run 1.
• Detection Channels: Key decay channels included H → γγ (two photons) and H → ZZ → 4 leptons, which provided clean signatures.
• Statistical Significance: The discovery reached the “five sigma” threshold, confirming the particle’s existence with high confidence CERN.

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Post-Discovery Trajectory

Run 2 (2015–2018)

• Energy Upgrade: Collisions at 13 TeV allowed deeper exploration of Higgs properties.
• Precision Measurements: Studies focused on couplings to fermions and bosons, testing Standard Model predictions.
• Rare Decays: Evidence for H → bb̄ and H → ττ decays strengthened the boson’s role in mass generation e-publishing.cern.ch.

High-Luminosity LHC (HL-LHC, 2029 onwards)

• Goal: Collect 10 times more data than current runs.
• Trajectory: Enables ultra-precise measurements of Higgs self-coupling, crucial for understanding the stability of the universe.
• Beyond the Standard Model (BSM): Searches for exotic Higgs-like particles and deviations in couplings that could hint at supersymmetry or dark matter connections e-publishing.cern.ch.

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Scientific Impact

• Electroweak Symmetry Breaking: The Higgs boson validates the mechanism by which particles acquire mass.
• Cosmology Links: Its properties may influence theories of early-universe inflation and vacuum stability.
• Future Prospects: The High-Energy LHC (HE-LHC) and proposed Future Circular Collider (FCC) aim to extend Higgs studies to even higher energies, probing unexplored physics domains arXiv.org.

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Comparative Table: Higgs Boson Milestones

Phase	Energy (TeV)	Key Achievements	Future Goals
LHC Run 1 (2010–2012)	7–8	Discovery of Higgs boson	Confirm SM predictions
LHC Run 2 (2015–2018)	13	Precision coupling measurements, rare decays	Refine Higgs profile
HL-LHC (2029+)	14	High-statistics dataset, Higgs self-coupling	Explore BSM physics
HE-LHC/FCC (future)	27–100	Extend Higgs studies to new energy scales	Probe dark matter, new symmetries

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Conclusion

The Higgs boson’s trajectory at CERN and the LHC is not merely about confirming a particle—it is about charting the fundamental architecture of reality itself. From discovery to precision studies and future collider projects, the Higgs remains central to unraveling mysteries of mass, symmetry, and the universe’s fate.