RT Journal Article
T1 Colorful imprints of heavy states in the electroweak effective theory
A1 Krause, Claudius
A1 Pich, Antonio
A1 Rosell, Ignasi
A1 Santos, Joaquín
A1 Sanz Cillero, Juan José
AB 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.
PB Springer
SN 1029-8479
YR 2019
FD 2019-05-17
LK https://hdl.handle.net/20.500.14352/12874
UL https://hdl.handle.net/20.500.14352/12874
LA eng
DS Docta Complutense
RD 28 abr 2024