Elsevier

Physics Letters B

Volume 98, Issue 4, 15 January 1981, Pages 291-294
Physics Letters B

Mass and mixing angle predictions from infra-red fixed points

https://doi.org/10.1016/0370-2693(81)90017-4Get rights and content

Abstract

It is argued that low energy parameters, such as masses and mixing angles, may be related by the infra-red fixed points of the underlying field theory. For the Kobayashi-Maskawa 6 quark model the infra-red fixed points predicts the top quark mass mt = 135 GeV and the Higgs mass mH = 72 GeV. The implications for the mixing angles and phase are discussed and we also show that grand unification predictions should not be significantly affected.

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    More generally, what generates the complicated mixing pattern of the quarks and the huge differences between quark masses? Many ideas have been put forward to explain these properties, including higher-order operators [1], new symmetries [2], extra dimensions [3,4], and the Renormalization Group (RG) flow of SM couplings [5,6]. Here, we explore a simple modification of the latter, as proposed in [7–11], motivated by the necessity of an ultraviolet (UV) completion.

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