Low energy behaviour of standard model extensions

  • Michele Boggia
  • Raquel Gomez-AmbrosioEmail author
  • Giampiero Passarino
Open Access
Regular Article - Theoretical Physics


The integration of heavy scalar fields is discussed in a class of BSM models, containing more that one representation for scalars and with mixing. The interplay between integrating out heavy scalars and the Standard Model decoupling limit is examined. In general, the latter cannot be obtained in terms of only one large scale and can only be achieved by imposing further assumptions on the couplings. Systematic low-energy expansions are derived in the more general, non-decoupling scenario, including mixed tree-loop and mixed heavy-light generated operators. The number of local operators is larger than the one usually reported in the literature.


Effective field theories Beyond Standard Model Nonperturbative Effects Renormalization Regularization and Renormalons 


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) 2016

Authors and Affiliations

  • Michele Boggia
    • 1
  • Raquel Gomez-Ambrosio
    • 2
    Email author
  • Giampiero Passarino
    • 2
  1. 1.Albert-Ludwigs-Universität Freiburg, Physikalisches InstitutFreiburgGermany
  2. 2.Dipartimento di Fisica TeoricaUniversità di Torino, INFN, Sezione di TorinoTorinoItaly

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