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Taming infrared divergences in the effective potential

  • J. Elias-MiróEmail author
  • J. R. Espinosa
  • T. Konstandin
Open Access
Article

Abstract

The Higgs effective potential in the Standard Model (SM), calculated perturbatively, generically suffers from infrared (IR) divergences when the (field-dependent) tree-level mass of the Goldstone bosons goes to zero. Such divergences can affect both the potential and its first derivative and become worse with increasing loop order. In this paper we show that these IR divergences are spurious, we perform a simple resummation of all IR-problematic terms known (up to three loops) and explain how to extend the resummation to cure all such divergences to any order. The method is of general applicability and would work in scenarios other than the SM. Our discussion has some bearing on a scenario recently proposed as a mechanism for gauge mediation of scale breaking in the ultraviolet, in which it is claimed that the low-energy Higgs potential is non-standard. We argue that all non-decoupling effects from the heavy sector can be absorbed in the renormalization of low-energy parameters leading to a SM-like effective theory.

Keywords

Spontaneous Symmetry Breaking Standard Model Higgs Physics Beyond Standard Model 

Notes

Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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Copyright information

© The Author(s) 2014

Authors and Affiliations

  • J. Elias-Miró
    • 1
    • 2
    Email author
  • J. R. Espinosa
    • 1
    • 3
  • T. Konstandin
    • 4
  1. 1.IFAE, Universitat Autònoma de BarcelonaBarcelonaSpain
  2. 2.Dept. de FísicaUniversitat Autònoma de BarcelonaBarcelonaSpain
  3. 3.ICREA, Institució Catalana de Recerca i Estudis AvançatsBarcelonaSpain
  4. 4.DESYHamburgGermany

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