Krause, ClaudiusPich Zardoya, AntonioSantos Blasco, JoaquínSanz Cillero, Juan JoséRosell Escribá, IgnasiUCH. Departamento de Matemáticas, Física y Ciencias TecnológicasProducción Científica UCH 20192020-12-172020-12-172019-08-02Rosell, I., Krause, C., Pich, A., Santos, J. & Sanz-Cillero, JJ. (2019). Heavy resonances and the electroweak effective theory. Proceedings of Science, vol. 340 (ICHEP2018), art. 316 (2 aug.). DOI: https://doi.org/10.22323/1.340.03161824-8039 (Electrónico)http://hdl.handle.net/10637/11771Esta comunicación se encuentra disponible en la página web de PoS en la siguiente URL: https://pos.sissa.it/340/316/pdfEsta comunicación forma parte de las comunicaciones leídas en la "39th International Conference on High Energy Physics (ICHEP2018)" dentro de la sesión "Parallel: Beyond the Standard Model" celebrada en Seúl (Corea del Sur) entre el 4-11 de julio de 2018.Taking into account the negative results of direct searches for beyond the Standard Model fields and the consequent mass gap between Standard Model and possible unknown states, the use of electroweak effective theories is justified. Whereas at low energies we consider a non-linear realization of the electroweak symmetry breaking with a singlet Higgs and a strongly-coupled ultraviolet completion, at higher energies the known particles are assumed to be coupled to heavy states: bosonic fields with JP = 0 and JP = 1 (in electroweak triplets or singlets and in QCD octets or singlets) and fermionic states with J = 1 2 (in electroweak doublets and in QCD triplets or singlets). By integrating out these heavy resonances, the pattern of next-to-leading order lowenergy constants among the light fields can be studied. A phenomenological study trying to estimate the scale of these resonances is also shown.application/pdfesopen accessCollisions (Nuclear physics)Colisiones (Física nuclear)Particles (Nuclear physics)Matter - Properties.Partículas (Física nuclear)Materia - Propiedades.Comunicaciónhttps://doi.org/10.22323/1.340.0316https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es