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Brout–Englert–Higgs mechanism

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Summary

In a gauge theory with a symmetry-breaking scalar vacuum, gauge fields associated with broken generators acquire longitudinal modes and masses, while gauge fields of the unbroken subgroup remain massless.

Record metadata

Qualification

Most of the mass of ordinary matter is not directly supplied by the Higgs mechanism; proton and neutron masses arise predominantly from QCD dynamics.

Concept sources

Incoming relations (arrows to this concept)

Each relation below ends at this concept.

Higgs doublet fieldBrout–Englert–Higgs mechanism

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

The Higgs doublet and its vacuum configuration supply the scalar degrees of freedom used by the electroweak Higgs mechanism.

How to interpret this relation type

The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.

Relation sources

Would-be Goldstone modeBrout–Englert–Higgs mechanism

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

In a gauge-fixed Higgs phase, would-be Goldstone degrees of freedom combine with gauge fields rather than appearing as physical massless particles.

How to interpret this relation type

The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.

Relation sources

Outgoing relations (arrows from this concept)

Each relation below starts at this concept.

Brout–Englert–Higgs mechanismATLAS and CMS Higgs-boson discovery

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

The boson and its measured couplings strongly support the Brout–Englert–Higgs mechanism, while ongoing measurements test its exact Standard Model form.

How to interpret this relation type

The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.

Relation sources

Brout–Englert–Higgs mechanismElectroweak symmetry breaking

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

The Brout–Englert–Higgs mechanism realizes electroweak symmetry breaking and gives longitudinal modes and masses to W±W^\pm and ZZ; charged-fermion masses require separate Yukawa couplings.

How to interpret this relation type

A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.

Relation sources

Brout–Englert–Higgs mechanismStandard Model of particle physics

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

The Higgs mechanism is part of the Standard Model electroweak sector.

How to interpret this relation type

The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.

Relation sources

Brout–Englert–Higgs mechanismWW boson

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

The Brout–Englert–Higgs mechanism generates the WW-boson mass through the Higgs vacuum and gauge coupling.

How to interpret this relation type

A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.

Relation sources

Brout–Englert–Higgs mechanismZZ boson

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

The Brout–Englert–Higgs mechanism generates the ZZ-boson mass while the orthogonal photon combination remains massless.

How to interpret this relation type

A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.

Relation sources