GIM mechanism

E120376

mechanism in the Standard Model theoretical framework in particle physics

The GIM mechanism is a theoretical framework in particle physics that explains the suppression of flavor-changing neutral currents by introducing quark mixing and predicting the existence of the charm quark.

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All labels observed (2)

Label	Occurrences
Glashow–Iliopoulos–Maiani mechanism	2
GIM mechanism canonical	1

Statements (41)

Predicate	Object
instanceOf	mechanism in the Standard Model ⓘ theoretical framework in particle physics ⓘ
abbreviationOf	GIM mechanism self-linksurface differs ⓘ surface form: Glashow–Iliopoulos–Maiani mechanism
addresses	absence of large strangeness-changing neutral currents ⓘ smallness of rare kaon decay rates ⓘ
appliesTo	weak charged currents ⓘ weak neutral currents ⓘ
compatibleWith	gauge invariance of the Standard Model ⓘ renormalizability of the Standard Model ⓘ
constrains	models of new physics beyond the Standard Model ⓘ
describes	cancellation of flavor-changing neutral currents at tree level ⓘ quark mixing ⓘ
explains	suppression of flavor-changing neutral currents ⓘ
field	flavor physics ⓘ particle physics ⓘ
generalizedTo	three-generation CKM framework ⓘ
historicalRole	provided theoretical motivation for the charm quark before its discovery ⓘ
implies	loop-level flavor-changing neutral currents are highly suppressed ⓘ
influences	structure of flavor physics phenomenology ⓘ
inspired	later developments in flavor physics and CP violation studies ⓘ
inStandardModelSector	electroweak interaction ⓘ
involves	cancellation between contributions of different quark flavors ⓘ unitarity of the quark mixing matrix ⓘ
mainConcept	suppression of flavor-changing neutral currents ⓘ
mathematicalFormulationUses	unitary 2×2 quark mixing matrix for two generations ⓘ
namedAfter	John Iliopoulos ⓘ Luciano Maiani ⓘ Sheldon Glashow ⓘ
predicts	existence of the charm quark ⓘ
prevents	tree-level flavor-changing neutral currents in the Standard Model ⓘ
publishedIn	Physical Review D ⓘ
relatedTo	Cabibbo–Kobayashi–Maskawa matrix ⓘ surface form: CKM matrix Cabibbo–Kobayashi–Maskawa matrix ⓘ surface form: Cabibbo angle charm quark discovery in 1974 ⓘ
requires	at least two generations of quarks ⓘ unitary quark mixing matrix ⓘ
testedBy	kaon decay experiments ⓘ neutral kaon mixing measurements ⓘ rare meson decay searches ⓘ
typeOfSuppression	flavor-changing neutral current suppression by destructive interference ⓘ
yearProposed	1970 ⓘ

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Sheldon Glashow → notableWork → GIM mechanism ⓘ

this entity surface form: Glashow–Iliopoulos–Maiani mechanism

Sheldon Glashow → knownFor → GIM mechanism ⓘ

GIM mechanism → abbreviationOf → GIM mechanism self-linksurface differs ⓘ

this entity surface form: Glashow–Iliopoulos–Maiani mechanism