%0 Journal Article
%T Fingerprints of heavy scales in electroweak effective Lagrangians
%A Pich, A.
%A Rosell, I.
%A Santos, J.
%A Sanz-Cillero, J. J.
%J Journal of High Energy Physics
%D 2017
%V 04
%N 4
%I Springer
%@ 1029-8479
%G English
%F Pich_etal2017
%O WOS:000398449400004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3074), last updated on Thu, 11 May 2017 16:24:07 +0000
%X The couplings of the electroweak effective theory contain information on the heavy-mass scales which are no-longer present in the low-energy Lagrangian. We build a general effective Lagrangian, implementing the electroweak chiral symmetry breaking SU(2)(L) circle times SU(2)(R) -> SU(2)(L+R), which couples the known particle fields to heavier states with bosonic quantum numbers J(P) = 0(+/-) and 1(+/-). We consider colour-singlet heavy fields that are in singlet or triplet representations of the electroweak group. Integrating out these heavy scales, we analyze the pattern of low-energy couplings among the light fields which are generated by the massive states. We adopt a generic non-linear realization of the electroweak symmetry breaking with a singlet Higgs, without making any assumption about its possible doublet structure. Special attention is given to the different possible descriptions of massive spin-1 fields and the differences arising from naive implementations of these formalisms, showing their full equivalence once a proper short-distance behaviour is required.
%K Beyond Standard Model
%K Chiral Lagrangians
%K Higgs Physics
%K Technicolor and Composite Models
%R 10.1007/JHEP04(2017)012
%U http://arxiv.org/abs/1609.06659
%U https://doi.org/10.1007/JHEP04(2017)012
%P 012-60pp