Perturbative Unification and Low Energy Precision Data

Details Perturbative Unification and Low Energy Precision Data Perturbative Unification and Low Energy Precision Data

1996-10-13

arxiv.org/abs/hep-ph/9610340v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, Revtex-3.0

Scientific paper

More precise unification predictions require going beyond the lowest order, including 2-loop running of the couplings and a correct treatment of threshold effects. Here we revised two different approaches to deal with light thresholds, based on different choices of the renormalization scheme, \bar{MS} and effective couplings. We show the equivalence of both approaches in making predictions when thresholds are taking properly into account.

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