Abstract
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.
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ArXiv ePrint: 1603.03660
Work supported by the Research Executive Agency (REA) of the European Union under the Grant Agreement PITN-GA-2012-316704 (HiggsTools).
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Boggia, M., Gomez-Ambrosio, R. & Passarino, G. Low energy behaviour of standard model extensions. J. High Energ. Phys. 2016, 162 (2016). https://doi.org/10.1007/JHEP05(2016)162
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DOI: https://doi.org/10.1007/JHEP05(2016)162