Colorful imprints of heavy states in the electroweak effective theory



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Krause, Claudius and Pich, Antonio and Rosell, Ignasi and Santos, Joaquín and Sanz Cillero, Juan José (2019) Colorful imprints of heavy states in the electroweak effective theory. Journal of High Energy Physics, 2019 (5). ISSN 1029-8479

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We analyze heavy states from generic ultraviolet completions of the Standard Model in a model-independent way and investigate their implications on the low-energy couplings of the electroweak effective theory. We build a general effective Lagrangian, implementing the electroweak symmetry breaking SU(2)L ⊗ SU(2)R → SU(2)L+R with a non-linear Nambu-Goldstone realization, which couples the known particles to the heavy states. We generalize the formalism developed in previous works [1, 2] to include colored resonances, both of bosonic and fermionic type. We study bosonic heavy states with JP = 0± and JP = 1±, in singlet or triplet SU(2)L+R representations and in singlet or octet representations of SU(3)C , and fermionic resonances with J=12 that are electroweak doublets and QCD triplets or singlets. Integrating out the heavy scales, we determine the complete pattern of low-energy couplings at the lowest non-trivial order. Some specific types of (strongly- and weakly-coupled) ultraviolet completions are discussed to illustrate the generality of our approach and to make contact with current experimental searches.

Item Type:Article
Uncontrolled Keywords:Beyond Standard Model, Chiral Lagrangians, Effective Field Theories, Higgs Physics
Subjects:Sciences > Physics > Electromagnetism
Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Quantum theory
ID Code:74438
Deposited On:21 Sep 2022 13:46
Last Modified:21 Sep 2022 15:22

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