Beta function (physics): Difference between revisions

Revision as of 12:10, 16 February 2021

Revision as of 20:15, 18 June 2021

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The value of the quasi-fixed point is fairly precisely determined in the Standard Model, leading to a predicted [[top quark]] mass of 230  GeV. The observed top quark mass of 174 GeV is slightly lower than the standard model prediction by about 30% which suggests there may be more Higgs doublets beyond the single standard model Higgs boson.

=== Minimal Supersymmetric Standard Model ===

{{Main|Minimal Supersymmetric Standard Model#Gauge-Coupling Unification}}

Renomalization group studies in the Minimal Supersymmetric Standard Model (MSSM) of grand unification and the Higgs-Yukawa fixed points were very encouraging that the theory was on the right track. So far, however, no evidence of the predicted MSSM particles has emerged in experiment at the [[Large Hadron Collider]].

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==See also==

*[[Banks–Zaks fixed point]]

*[[Callan-SymanzikCallan–Symanzik equation]]

*[[Quantum triviality]]